This is a sacred cave of Guru Padmasambhava, a 2 km uphill from Tholung Monastery at Dzangu, North Sikkim, India.
According to them, every followers of Guru Rimpoche should visit this place atleast once in their life time. At Tholung monastery, one of Guru Rimpoche’s used things are kept. They display those things in every three years. This year 21st-24th Nov is the date.
Om Ah Hung Vajraguru Padma Siddhi Hung!!