Full-day Psilocybin Group Retreat in Sintra, Portugal
With Madelyne Pfeiffer, MSW, Roy Slagter and Leah Park
June 27, 2026
Nestled within the mystical, mist-veiled forests of Sintra, this retreat is a sacred container designed to return you to your strength, integrity, and presence. Far from the modern world’s distractions, we invite you into a private sanctuary to heal past traumas, release emotional burdens, and reclaim your true nature.
Facilitated by Madelyne Pfeiffer, MSW, alongside experienced guides Roy and Leah, your journey is held with professional clinical oversight and deep spiritual reverence. Our team combines years of training under global masters with psychological expertise to ensure you are guided with the utmost safety and care.
Your experience bridges ancient wisdom and modern somatic practice:
• Ancestral Sound & Medicine: Guided by the medicine of psilocybin, your journey is carried by the vibration of ancestral instruments. Sacred chants from the Amazon and the Indian continent are woven to awaken your inner light and lead you back to the heart.
• Somatic Integration: To ground your insights, we utilize Breathwork and Qigong, helping you integrate the experience deeply into your body and soul.
• A Sanctuary of Light: Our venue is a secluded forest haven. The ceremony space, designed with high roofs and expansive glass, allows the beauty of Mother Nature to be your first sight as you emerge from your journey—a living reflection of your own inner awakening.
Whether you seek to heal ancestral patterns or reconnect with your “True Self,” this retreat offers the community, ritual, and expert guidance necessary for transformation.
Step into the magic of Sintra. Reconnect with your heart. Remember who you are.
About the Leaders
Madelyne Pfeiffer, MSW
As a Certified Medicine Woman (through the Native American Church) Psychedelic Therapist/Mental Health professional (Masters in Social Work), Spiritual Entrepreneur Coach, and Certified Kambo Practioner (through Tribal Detox), Madelyne facilitates Kambo and psilocybin ceremonies to individiduals, couples and groups. Madelyne also known as Fearless Spider Spirit, had a life-altering awakening through ancestral medicine 8 years […]
Learn more about Madelyne Pfeiffer, MSWRoy Slagter
Roy serves as a dedicated facilitator and space holder, bringing a deep reverence for the healing power of sound and silence. His personal mission is to help the Western world rediscover ancestral medicine, guiding participants to reconnect with their hearts through a grounded and supportive presence. With years of experience assisting in diverse plant medicine […]
Learn more about Roy SlagterLeah Park
Leah Park Leah Park is the founder of Together Alone Collective , where she guides Qigong (energy awareness) and Inner Alchemy through a deeply embodied approach to transformation. Her work integrates Qigong, Tantric active meditation, Compassionate Inquiry, healing diets, and plant medicine journeys to cultivate presence and inner alignment. At the heart of Leah’s offering […]
Learn more about Leah Park