Everything you’re likely to wonder about dark retreats and how Acraya sanctuaries work. For a deeper introduction, start with What is a dark retreat?
A dark retreat is an extended stay in complete darkness — typically several days — undertaken as a meditation practice. Free from all light and visual stimulation, practitioners turn attention inward for rest, self-inquiry, and contemplative training. The practice has deep roots in the Bön and Tibetan Buddhist traditions.
This is a widespread claim, and it is important to be precise: it has not been scientifically established. Some traditions and practitioners hold that extended darkness stimulates endogenous production of DMT and other compounds associated with visionary experience, and many retreatants do report vivid imagery after several days in the dark. But no controlled study has yet confirmed the DMT mechanism in humans. Acraya treats it as a traditional and anecdotal account, not a fact — and we are supporting formal research with the Institute for Advanced Consciousness Studies to study what actually happens in the body during dark retreat.
A dark retreat is not appropriate for everyone. You should not undertake one if you have a history of psychosis, schizophrenia, bipolar disorder, or severe unresolved trauma, or if you are currently in an acute mental-health crisis. Extended darkness and solitude are powerful amplifiers of inner experience and can surface difficult material. If you have any significant physical or mental-health condition, or take medication that affects mood or sleep, consult your clinician before booking. All Acraya guests are screened before their retreat is confirmed. This is general information, not medical advice.
Costs vary widely with location, accommodation, and the level of support. Simple unsupported cabin stays can cost under $100 per night, while fully supported retreats with private facilities, prepared meals, and professional facilitation typically range from roughly $200 to $500 per night. Stays at Acraya’s first sanctuary, Holos in Costa Rica, start from $350 per night including all food and beverage.
For a first retreat, three to five nights is a common and sensible span: long enough for the mind to settle and the deeper phases of the process to begin, short enough to remain manageable for someone with an ordinary meditation practice. Traditional Tibetan retreats run forty-nine days, but those are undertaken by seasoned meditators after years of preparation.
With proper screening, preparation, and support, dark retreats have been practiced safely for centuries. At Acraya sanctuaries, every room is equipped with non-contact monitoring — radar-based presence and breathing sensing, thermal imaging that works without light, and two-way audio — so a facilitator or on-site staff can check on you and you can ask for help at any moment without any light entering the room.
Yes. You can leave the room at any time, for any reason, without penalty. The door is never locked. Retreatants remain in complete control of their experience.
Meals are prepared by the retreat center kitchen and delivered through a light-lock system that keeps the room fully dark. Food is designed to be simple to eat without sight, and dietary restrictions can be accommodated — you share your needs when booking.
You sleep whenever your body wants to. Without light cues, most people’s sleep naturally fragments and redistributes across the day, and this untethering from the clock is part of the practice. There are no clocks in the room; the support system tracks your rest so facilitation can be scheduled around it.
Less than you’d think, and more than you’d expect. Retreatants alternate between formal meditation practice, rest, gentle movement, and simply being with what arises. Your facilitator prepares you with practices suited to darkness before you enter. Most people find the days surprisingly full: as outer stimulation falls away, inner experience becomes vivid.
You wear nothing. Acraya rooms use entirely non-contact sensors: radar for presence, breathing, and heart rate; a thermal camera that senses heat rather than visible light; and a microphone and speaker system for two-way communication. The room stays completely dark at all times, and monitoring data is handled privately and securely.
Before your retreat, you work with an experienced facilitator on preparation and intention. While you are in the room, you can speak with your facilitator through the room’s audio system — including scheduled check-ins and on-request sessions — without any light entering the room. Afterward, your facilitator supports your integration as you return to ordinary life.
Reservations are currently open at Holos in the Diamante Valley, Costa Rica, from $350 per night. Locations in Nepal and Bali are in development and are waitlist-only — they are not yet bookable.
The best foundation is an established daily meditation practice. Beyond that: arrange your affairs so nothing urgent awaits you, reduce stimulants in the days beforehand, arrive rested, and complete the preparation sessions with your facilitator. Integration afterward matters as much as preparation — plan a gentle re-entry rather than returning straight to full intensity.