Jatsön Nyingpo was a renowned Nyingma treasure revealer and spiritual master who played a significant role in Tibetan Buddhism. He began his monastic training under Mipam Tashi Lodrö and later spent seventeen years in a sealed retreat, during which he revealed numerous treasures, including the Embodiment of the Precious Ones (dkon mchog spyi 'dus), a Guru Rinpoche sādhana that became widely practiced. He also identified Pemakö as a hidden land, a sacred refuge for practitioners in degenerate times, and authored The Guidebook to the Hidden Land of Pemakö. Jatsön Nyingpo established the monastic center of Bangri Jogpo and taught many prominent Nyingma and Kagyu masters, influencing figures such as the Tenth Karmapa and Jamgön Kongtrul. His teachings continue to inspire practitioners across traditions.