 Padmasambhava, or Guru Rinpoche (late 8th to early 9th century), meditated and practiced tantric yoga with his yogini Yeshe Tsogyal here, and to have spent 7 months in meditation in the 'Dawa Puk', which is considered to be one of his three most important places of attainment.After Lhalung Pelgyi Dorje assassinated the anti-Buddhist Bon Emperor Langdarma in 842 CE he is said to have hidden himself in a cave and meditated for 22 years.His hat was kept there until 1959.