Padmasambhava assigned deities to protect the beyul. Protective forces manifest as snowstorms, mists and snow leopards. Buddhist texts indicate beyul are discovered when the planet is approaching destruction and the world becomes too corrupt for spiritual practice. They describe valleys reminiscent of paradise, which can only be reached with enormous hardship. Pilgrims who travel to these wild and distant places often recount extraordinary experiences similar to those encountered by Buddhist spiritual practitioners on the path to liberation. People who try to force their way in may encounter failure and death.[2] [3]
Source: Beyul – Wikipedia
Tim B.
“Their locations were kept on scrolls (lamyig or neyig) hidden under rocks and inside caves, monasteries and stupas. They are places where physical and spiritual worlds overlap and Tantric practice effectiveness increases with multiple perception dimensions.[1]”