History of Hemis: Hemis Monastery existed already before the 11th century. Naropa, the pupil of the yogi Tilopa, and teacher of the translator Marpa is connected with this monastery. A translation of Naropa's biography has been found in Hemis monastery.
In this manuscript Naropa (or Naro) meets the "dark blue" Tilopa (or Tillo). Tilopa is a tantric master who gives Naropa 12 "great" and 12 "small" tasks to do in order to enlighten him to the inherent emptiness/illusoriness of all things. Naropa is depicted as the "abbott of Nalanda", the university-monastery in today's Bihar, India, that flourished until the sacking by Turkish and Afghan Muslim forces. This sacking must have been the driving force behind Naropa's peregrination in the direction of Hemis. After Naropa and Tilopa met in Hemis they travelled back in the direction of a certain monastery in the now no longer existing kingdom of Maghada, called Otantra which has been identified as today's Otantapuri. Naropa is consered the founding father of the Kagyu-lineage of the Himalayan esoteric Buddhism. Hence Hemis is the main seat of the Kagyu lineage of Buddhism. In case you were wondering about the history.