Reflections on a 40-Day Dark Retreat

Blog Post

Share this

By Kali Aney, reposted with gratitude from

Disclaimer: This post is about a spiritual practice called Kaya Kalpa, or Dark Retreat. I am using words such as “energy,” “chakras” and “visions,” if you do not believe in all this, feel free to replace them with “physical sensations,” “states of mind” and “DMT-induced hallucinations.”

“I wish I could show you,
When you are lonely or in the darkness,
The Astonishing Light
Of your own Being”

I’m just out of 40 days of meditation retreat in solitude and in complete darkness. I’m usually not a big fan of sharing spiritual experiences online but the fact that so many people have been asking me how it was, and that I struggled to find information online about long dark retreats before mine, decided me to write what is shareable about it.

What is a Dark Retreat?

“Darkroom retreats have been used by a variety of spiritual traditions throughout the centuries as a higher-level practice. The aspirant enters a room specially prepared to admit absolutely no light and spends a number of days under this sensory deprivation in order to bring about a profound shift of consciousness.

Research has shown that in prolonged darkness a biochemical reaction in the brain is causing extraordinary molecules like DMT to be synthesized which trigger altered states of perception allowing for accelerated evolution towards the Revelation of the Self and a Consciousness of Oneness.” (

The Taoist Perspective

According to Mantak Chia (in the book Darkness Technology, available in the Resources section):

“The darkness actualizes successively higher states of divine consciousness, correlating with the synthesis and accumulation of psychedelic chemicals in the brain.

Melatonin, a regulatory hormone, quiets the body and mind in preparation for the finer and subtler realities of higher consciousness (Days 1 to 3).

Pinoline, affecting the neuro-transmitters of the brain, permits visions and dream-states to emerge in our conscious awareness (Days 3 to 5).

Eventually, the brain synthesizes the ‘spirit molecules’ 5-methoxy-dimethyltryptamine (5-MeO-DMT) and dimethyltryptamine (DMT), facilitating the transcendental experiences of universal love and compassion (Days 6 to 12).”

The Alchemical Perspective

“The journey into Darkness is not just a first stage, but it is the essence of the spiritual alchemical work, because without it, the individual will remain only at the superficial level of mere rational thinking and social existence, dominated by dogmas. There is an important alchemical adagio: Visita Interiora Terrae Rectificando Occultum Lapidem (“Visit the interior of the earth; rectify what you find there, and you will discover the hidden stone.”) To describe the “descent into Darkness,” summed up in the word “vitriol,” alchemy has preserved some very ancient symbols.

The individual (actually only his/her personality) descending into its original nature will suffer a great loss. He must abandon all his old moral, social and spiritual values. Thus, he will open himself to a different order, more in tune with the Harmony of the Whole.

This is what is happening in a Dark Retreat.” (Hridaya Yoga)

It really felt like I was doing this alchemical work during the retreat, I called it my “Grand Oeuvre” (Magnus Opus), my personal and spiritual transmutation.


The thought of doing a 40-day Dark Retreat came quite unexpectedly to me during meditation, but I was feeling the need of doing a long retreat for quite some time.

Having never done either a solitary, or a long, or a retreat in darkness, and having not been practicing very well in the past year due to a very full work schedule, I knew it was going to be a challenge, and boy, it was!

To give a bit of background, I started on the path three years ago, doing a lot of reading and a bit of meditation the first year, a lot of yoga, meditations and retreats the second, and very little last year except two retreats. That’s not so much time and I probably would have benefited even more if my personal practice had been stronger, but I thought I could always do another one, and I saw this retreat as a rite of passage into adult spiritual seekerhood. If I could last six weeks in solitude in the dark, practicing constantly, I was not a spiritual tourist any more. By doing a Dark Retreat, I was hoping to finally face myself fully. Stopping to escape through distractions, I would learn to sit, watch and accept my mind and my emotions for prolonged period of time, and hopefully get some insights in the process.

The Dark Room

I decided to do my Dark Retreat at The Hermitage Guatemala, as it is the most “put together” dark room I found in Central America and it looked suitable for a long retreat.

The room was very nice, made of natural stone which make it feel a bit like a cave, but still quite comfortable, with a good bed, a meditation bench, a shelf, compost toilets, cold shower and a double doors trap to pass the food without letting any light in. I was fed (in silence) twice a day a lot of veggies and a bit of rice, that was my only contact with the outside world for the 40 days.

A 360° Tour of the Dark Room

There was a very good ventilation system, which is great in itself as you get plenty of fresh air and don’t feel the moldy atmosphere, and is also super important with compost toilet which can become quite smelly in such a confined atmosphere.

The cold shower on the other hand was very challenging as the room, being made of stone, was very cold. I would say that it didn’t get above 15 degrees during my whole stay and I moved around with my fleece jacket and hoodie on 24/7. On the plus side it was a bit like being in an Himalayan cave, it kept me very sharp during meditation and made me feel like a true mountain yogini!

The Process

I entered the dark room at sunset Tuesday, the 24th of November, and blew out the last candle at 6pm. The first day was quite challenging, I finally realized the full extent of the experience: I was going to be in the dark, with nothing to distract me, alone, for 40 days. My mind freaked out a little bit, but I checked myself and started designing my program of practice: meditation from wake up time till breakfast at 9, then long meditation, hatha yoga, and another meditation until lunch at 3. Little rest after lunch then meditation until sunset (I could hear the crickets starting to sing), hatha yoga and exercises, shower, meditation and bed where I would continue to meditate until I fell asleep. I have been following my schedule pretty well, and overall I did about 7 to 10 hours of formal practice per day, the rest being spent watching my mind or meditating while lying down.

I practiced mostly Hridaya Meditation on the Spiritual Heart with some Tantric Vipassana (from the Vijnana Bhairava Tantra) sessions when my mind was too restless. I also used Tonglen (from the Tibetan Buddhist tradition) to love and accept my fears or negative thoughts when they were starting to disturb me. When my mind was going too insane, I chanted aloud the only bhajan I remembered, practiced Japa Yoga or recited Christian prayers.

Week 1

“Don’t dramatize.” -Sahajananda

Day 1 to day 3, I slept quite a lot and had a lot of very lucid dreams, then I started to adjust to the darkness and slept much less. The visions started on day 5 with a lot of geometrical shapes, then the vision of a beautiful bright white moon in a castle in the sky appeared, and very pictorial visions never stopped again until the end of my retreat, only growing stronger and brighter as time passed. The visions were quite varied, from cartoon-like technicolor movies to a 360° immersion in beautiful purple or turquoise landscape with characters moving around, interacting with me, from flying boats filled with kittens wearing hats to huge stone like faces starring at me.

Visions are just visions though, and as fascinating or beautiful they can be I mostly tried to ignore them, to not interact with anything and just focus of the object of my meditation. It was quite challenging sometimes as the room was by moment crowded and I had to pass through characters, animals or walls to go from one side to the other, and it happens sometimes that the vision of the bed or the shelf were so real that I forgot that I couldn’t truly see, and then bump badly into a wall or some furniture.

I got scared a few times by very dark floating shadows, or characters coming from horror movies, not so much from their presence (although my first reaction was fear, I decided very firmly from the beginning of the retreat that I would NOT be scared by my own mind), but from sudden movements. It’s already a bit unsettling to be doing your yoga, trying not to watch the tortured woman from the Martyr movie crawling towards you, but I really jumped in shock when she actually suddenly extended her arm to touch me.

I realized how important it is to guard the sense doors and to be very aware of what you are letting in. As the Tibetan Buddhists say, whatever is still in your mind at the moment of your death will face you during the Bardo, so a dark retreat is also the opportunity to face these images and fears in a more conscious state than after death, and integrate or release them.

So the first week has been mainly about mental purifications, accepting and letting go of fears and attachment towards disturbing images.

Week 2

I’m getting used to navigate in darkness, and it is much easier for me to do my practice, use the compost toilet, or take cold showers (which are still very challenging though as the dark room is so cold in itself). I start to exercise as well to stay a bit fit and to compensate for the long hours of still meditations, and working out before showering makes the showers a bit less threatening.

As I am meditating for extended periods of time I am getting more and more insights into my mind and myself, and some beautiful experiences, like experiencing the true meaning of the mantra “Om Mani Padme Hum,” “Praise to the jewel in the lotus” (the lotus being the heart). I literally see myself being somehow inside my own heart, which became huge and is shining with an incredibly bright blinding white light, exactly like a diamond. I very often during this week see light shining extremely bright from my body, huge beams of white light shooting out of my heart or my head, bright red light coming from the navel, glistening gold or purple light filling the whole room etc. It’s incredibly beautiful and fascinating to witness this saying of Rumi becoming true in front of my eyes:
“Don’t you know yet?
It is your light
that lights the worlds.”

I sometimes close my eyes and put my hands in front of them to convince myself that I am looking inside myself and not outside. It’s very fascinating to see my mind recreating the outlines of my hand, but still keeping them transparent, and to be able to look at the visions through them. From this week on my whole body looks transparent and usually glistening with light, which can become quite tiring at night as the bright lights shooting right in my eyes sometimes prevents me from sleeping, as if having cars coming towards me with headlights on full beam while tying to get some rest.

Week 3

My body is shaking more and more from inside in meditation, and I really feel an inner tremor growing as I go deeper inside. Sometimes it feels like my whole body is vibrating, and a few times it got to the point of giving me the impression that the whole room was shaking with me. I do not see the darkness anymore, as everything is so colorful and bright most of the time. The only moments when I can see the darkness are when I wake up in the morning and when I go in some deep meditation on the crown chakra, where only black and glistening diamond white light remains.

It’s interesting to witness the different colors and textures of the images projected according to my state of mind. For example, after eating I always get visions of caves made of clay or stone, filling the whole space around me, full of people looking like medieval peasants or wooden figurines, transferring a feeling of heaviness and constraint. When I am restless and my mind keeps thinking about what I could do outside, I get fast moving landscapes with very bright lights. When I’m extremely happy, amazing blue sky, turquoise, pink and purple glistening light with very thin particles, quite still, filled with tree like silhouettes or canopy. In extremely peaceful and blissful states the quality of the light become even more subtle and beautiful, the space becoming huge, sometimes looking like the inside of a gigantic and beautiful cathedral. If I’m upset though, everything shrinks, the wall becomes closer and closer and more dense, I get lines of characters surrounding me, shouting at each others and at me, upsetting scenes or landscapes spinning faster and faster, exhausting me. All these different images allows me to watch closely my states of mind and realize how truly important it is to be careful of the kind of thoughts and feelings I am allowing to settle inside myself.

I start again to lucid dream quite a lot. Usually I am dreaming of being in the dark room but filled with light and I am desperately trying to cover the gaps letting the light in, or upset at someone for opening the windows before the end of the retreat, and then realizing it is not possible and that I am dreaming. I guess it was the war between my subconscious and conscious mind, one being happy to be there and wanting to continue while the other was trying to get out.

I get from time to time weird smells, some like incense and other that I cannot define. This is when I started to hear voices as well, which really scared me. Visions are ok, I can tell myself, “this is just the Dharmakaya of my own mind,” and ignore them. Visions still looks externals, but voices are more challenging, as I really hear them happening inside my head, and it made the whole visions thing more real, more like being in contact with another world, the astral world. Luckily they didn’t happen too much though, but when I started to hear some ethereal chanting, lasting for several hours, or a crazy loud laugh inside my head, or a voice telling me “Let it go…,” I had goosebumps all over me.

I’m also starting to see beautiful clouds exploding into multicolor fireworks happening randomly during meditations, with green, purple, fuchsia, blue and violet light. Hatha Yoga is starting to become very entertaining, as I see each asana or kriya producing different colors and quality of light in my visions. For example pranayama produce a very light and pristine atmosphere, while nauli kriya creates a lot of green light during sublimation and red during the actual practice. Then, if I hold my breath long enough amazingly realistic visions appear, which I used as my personal 3D TV when I was becoming bored or restless. With bhujangasana or the bound lotus, on the other hand, the light becomes bright clear blue or pink/violet, with a lot of diamond particles in it.

A lot of mental purifications and letting go happened this week also, reminding me of this quote:
“Nothing ever goes away until it has taught us what we need to know.” -Pema Chödrön

Week 4

Day 21, 21 being a sacred cycle, I performed a ritual, and strangely it started to rain, for the first and only time during my retreat. I felt the rain purifying me from the past and allowing me to be reborn into the new. The next day, I get my first true experience of bliss in the heart.

I got a lot of up and downs this week, and worked a lot with Anicca, impermanence, getting more and more profound insights about how truly everything, no matter how hard or how beautiful, pass away, so that there is no point in getting upset about anything. I believe now that once the lesson of impermanence is truly understood, you can just sit with any situation, thought or feeling, and let it pass peacefully.

A lot of very interesting meditations, fascinating worlds of purple colors with castles in the sky, flying boats, full of characters and animals, filled with life, amazing halo of white light around my head feeling very hot, like being kissed by the sun, when meditating on Sahasrara, etc. I am more and more feeling like being in a dream, witnessing worlds arising and falling in my mind eye.

From this moment on I felt more and more deep gratitude for the opportunity of trying to live a life of practice and service, for the gift of Dharma and Sangha, for the chance of having the time, money and energy to sit and learn to stay, day after day. I also realized that each action appears effortlessly when it is supposed to happen, that somehow no effort is required and there is absolutely no need to worry or push as everything is exactly as it should be. The path is just learning to renounce the game of the mind and stay in the ever-present background of Being.

I truly felt how a wide-open heart means a quiet, contented mind, and how important the cultivation of the Heart through gratitude and compassion is on the path. I’ve been surprised how it enabled me to sit with profound restlessness, with the urge to act, and watch it dissolve into peace and focus.

Week 5

A lot of great meditations and realizations this week. I alternate between deep feelings of gratitude and fullness, and moments of sadness due to spending Christmas far from my loved ones. I am celebrating Christmas Eve by eating a few nuts and raisins while listening to the fireworks on Lake Atitlán, learning about gratitude, contentment and patience. Things are pretty much the same, lots of visions, sometimes tiring and distracting in meditation as they move so much. I also get a lot during this week a huge lion face right in front of me whenever I close my eyes, like 1 cm away, it’s looking a bit like a mask where I can look through the lion eyes into other universes. It’s a bit unsettling to see this feline face almost attached to mine whenever I close my eyes, but I get used to it and after a few days it eventually disappears.

I am getting a bit tired of the visions, and start to feel excited about getting back to life and having a more balanced practice. I’m not really thinking about coming out though, and keep working on building discipline and determination to witness whatever is happening.

The fan broke down around midnight on day 33 (I sleep very little these days, usually a few hours in the early morning). The smell of the compost toilet was really bad and I realize how lucky I have been to have the fan working 24/7 until then. My mind started to go crazy at the thought that it might be broken and stay like this until the end of my retreat. When it was finally turned on again the next day after breakfast, I felt such an overwhelming sense of joy and gratitude that I realized how happiness is really as simple as a breath of fresh air.

Week 6

“Everything in the Universe is within you. Ask all from yourself.” –Rumi

Week 6 finds me very restless, my mind starts to plan again and picture how things will be after the retreat. It’s like all the thoughts about the world that I refused to contemplate during the retreat (because they were no point really) are rushing back and filling me with a sense of huge excitement at the idea of being back in the world. I have never been so into the world before, and thought myself quite detached, but my mind is showing me how many strong attachments I still have. Meditation is a bit tricky with so much energy moving in me so I work on surrender and radical acceptance with whatever is.

I still get a lot of deep and silent meditations, and get some of the most important releases and understanding of the retreat in the last few days, when I think that all my concentration is lost and that it is almost pointless to sit. That makes me realize how each meditation sessions, no matter how “bad” or useless it might seem to the mind, is actually moving things in the depth and preparing you for the next unexpected “good” one. I am learning more and more not to look for experiences or particular states, to just sit, accept and love myself and my struggles, to just be present and let time do the work.

The fan stops from time to time for a minute or two and brings me back to the present moment, to the huge feeling of gratitude for every second of fresh air.

I also feel more and more how truly everything in the world is the projection of my own mind, how life is a just a dream which can be enjoyed as such.

On New Year’s Eve I feel very holy and blessed to be on the 38th day of the retreat and to have the opportunity to step into the new year in such a way. I intensified my practice and after the New Year’s fireworks, I get a very strong intuition that I am not the doer, that everything is happening in consciousness as in a full immersion 360° movie, that everything moves in the mind but that the one who is experiencing in me is forever silent and immobile. With pristine purple and blue light glistening with diamonds surrounding me, I see that my mind is as boundless as the sky and is the matter permeating everything. Gratitude.


I came out of the Dark Retreat Monday, the 4th of January before sunrise. I made a short last meditation and thanked the Universe for this beautiful experience, and stepped out in the world. The air was fresh and crispy, the birds singing, I could hear the small waves of lake Atitlan rushing to the banks, everything looked so wonderful and sharp. I sat down quickly as my balance was very shaky and my eyes kept jumping from focusing to defocusing, part of the astral visions still superimposed on the world. I waited for maybe another half an hour, taking in deeply everything that was happening, feeling at once very quiet and aloof while extremely happy and grateful for the gift of this wonderful world.

When my vision improved a little bit I stood up to try to get down to the dock to witness the sunrise. At this moment a man, which I noticed earlier meditating on a wall close to the door of my retreat and to whom I addressed a small shaky “Hello” (I wondered in the beginning if he was still part of my visions), approached me. I was a bit in shock to have to interact with a stranger so soon after coming out and tried to make out his face with my blurred vision. After a little while I started to see his traits, and the more I looked the more familiar he became, until I realize it was my partner, who I thought long gone back home to Europe, standing there to welcome me back to the world! He had decided not to take his flight home in order to be there for me when I would come out, not really knowing what would become of me after 40 days alone in the dark. 😀

It was such an amazing way to close this retreat that it felt like a big pat on the back from the Universe.

40 day retreat

Just Out of Darkness

To conclude, here are the 2 single most common questions people ask me:

1. What was the hardest part in the retreat?
Restlessness has been the most challenging part for me. I was used to ten days silent retreats and 40 days of darkness and solitude is really something else. I passed through so many different phases, from never wanting to leave the retreat to being desperate when thinking how many days were left. I felt so much energy and need of acting in the world sometimes that it was hard to just witness and detach from it. But it taught me a lot about my restless monkey mind and how to handle it

2. And, the most beautiful or insightful?
I don’t really answer this one as it is very personal, but on a more general note I would say:
Sitting and surrendering, letting go of the fear of emptiness, of the fear of seeing myself as I truly am, opening and accepting, again and again.

The strong feelings of joy, happiness, gratitude, like I never experienced before.

A deep awareness about my automatic responses and patterns, allowing me to slowly untangle them, and eventually becoming more free of them.

A sense of space and detachment from my usual responses, and much more love and compassion for my fellow struggling human beings.

Going over my whole life and forgiving situations and people, leaving me with a immense feeling of gratitude for each experience which brought me to the next, which made me who I am today. Every single experience being a great gift.


I am not an expert, but if you are considering doing a long Dark Retreat here are a few things I learned while doing mine:

  • Bring a lot of snacks, it helps quiet the mind when nothing else works, plus almonds, peanuts and other nuts in general help the production of DMT in the brain. I found out that honey changed the visions to more elevating ones, so it can be a plus whenever you feel a bit blue.
  • If you plan to stay long, supplement yourself in vitamin C, D, B12 and spirulina/blue algae (have a look at Darkness Nutrition, page 43, of the Mantak Chia pdf in the resource section). Be very aware when arranging your medication and remember how each box or pill feel to not get things mixed up in the darkness.
  • Get a travel toothbrush that you can fold, you will be grateful once it has fallen once or twice on the floor.
  • Get double of everything important and keep them in separate places (pen, earplugs…), as it is very easy to lose something and never find it back in the dark
  • Bring a diary to write down your thoughts. It’s a bit tricky to write in the dark but if you keep your finger on the page at the place you started and allow enough space between the lines, it’s completely doable, and it’s so nice to read at the end of the retreat!
  • Don’t let your mind go crazy about fear of the future or regrets from the past. See the stories as unreal and impermanent, and use the repetition of a mantra (Japa Yoga) if you cannot stop your mind from wandering. I even used japa yoga aloud from time to time, either with a mantra or through chanting some bhajan, when my mind was becoming too insane.
  • Take it a day at a time, refuse to let you mind wanders on how many days are left, or what you are going to do next.
  • Surrender and enjoy the process
  • Anyway, as it is a very full experience, which cannot really be expressed thoroughly through a blog post, feel free to drop me a line if you have any thought or question about it!

Useful Resources

This Post Has 14 Comments

  1. kris

    wow! so interesting. thanks, victoria!

  2. kamala

    Such an inspiring journey. Thank you for sharing!

  3. Jennifer

    Thank you for sharing your personal journey. One day I hope to be strong enough.

  4. Henrik

    Thank you so much for sharing!

    I would really like to know if it has changed the way you look at life in general?

    What you think is important, how you want to live your life etc.?

    Was it difficult to come back to your normal life – have you changed many things in your life?

    Has it changed your dreams (during sleep) and do visions in general happen more often now (meditation / dreams / awake)?

    There are different approaches and schools when it comes to the dark retreat and I find it difficult to settle on one – fx Dzogchen vs Tao/ Mantak Chia.
    – Dzogchen (“Teachings on shitro and yangti”) is really specific with so many different visualizations etc..

    Would you do it again?

    All the best to you and thank you!


  5. Tara

    wowwwwww INSPIRING!!!

  6. Brian

    Thank you so much for sharing.

    I meditated for several years and did a 10 day silent retreat. My current practice is non-existent, but a friend of mine shared your article as she knows someone on a similar retreat.

    I’d never heard of these, but your shared experience and suggestions inspires me to restart my practice and stop being a spiritual tourist!

    Many thanks.

  7. hoz

    I admire Master Chia for making so many good things happen, but I found his manual on Dark Retreat really vague when it came to documenting where and how research has proven that darkness releases DMT and 5 meO. I find that plausible, but the Regina Hess link as a supposed source of that research was basically conjecture. then everyone cites Chia and it is still basically conjecture. there is no need to perpetuate this flimsy confabulation approach just because the theory itself makes sense. From what I can tell, even Strassman has merely found DMT in rats, and 5meO has been found in spinal fluid. But everyone who says that darkness makes the pineal release these substances is basically fudging it?!?. anyone who can point me in the direction of actual clinical findings will be very appreciated in my camp. Thanks in advance,

  8. Donna

    Thank you so much for sharing your experience. I just recently discovered this. I didn’t know such a thing existed here on earth but immediately recognized it as exactly what I have been searching for. THIS, my heart is screaming to me. I look forward to experiencing one of these retreats as soon as possible.

    1. Clay Pulley

      Donna I feel the same way. I just booked the one in Mexico for month of May 2022 !

      It was only $1020

  9. Carlos jesus

    hello very good information I did 7 darkness retreats the longest was 11 days
    and the most powerful
    and 4 without water
    and inch with epsom salt a day before to enter consciousness faster
    that is super important
    the ancients did it fasting
    and to activate the endocrine system 7 days without drinking anything
    and doing the Chinese technique of producing saliva and swallowing
    saliva super antioxidant swallow
    100 or more times each time you generate saliva by stimulating with your tongue and then with your mind that your mouth fills with saliva and you swallow, you will be super hydrated with this technique
    and practicing Anapanasatti meditation is the most powerful
    good luck and much love ? towards oneself
    thank you thank you thank you for believing


    Hi Victoria, I just returned form the Hermitage. I was there in solitude for 14 days and I began to feel curious about the dark room. Learning about your experience is very helpful. I may try it next year. Thank you!! Sylvia

  11. Badoux Michèle

    Merci infiniment pour votre témoignage. J’ai fait une petite retraite de 3 jours dans le noir chez moi, et à la fin du 3ème jour, les visions ont commencé. Comme vous, lorsque je suis sortie du noir, j’avais encore des visions. Vos explications me sont précieuses, car je ne savais pas que les visions durent aussi longtemps. Belle et courageuse expérience!
    Vais-je me lancer un nouveau défi ? Vous m’en donnez l’envie!

  12. Darío

    Infinite thanks. So much valuable

  13. oliver

    Thank you for this incredible description of your retreat.

Leave a Reply

Latest Post

Exploring Beauty as a Doorway to Love 

Exploring Beauty as a Doorway to Love  By Jessica Soares Is Loving Beauty Superficial? Vain. Conceited. Shallow.  All words that have been wielded as weapons against a demonstrated love and care for beauty. So prevalent are the judgments that can be held towards appreciating beauty, particularly one’s own, that we

Read More
More Posts
Follow Us on Instagram