Richö
Richö (Tib. རི་ཆོས་, Wyl. ri chos) — literally ‘Mountain Dharma’, a style of text, usually focusing on instructions for practising in retreat. There are number of texts belonging to this genre and often known simply by this name, including The Alchemy of the Siddhas by Dudjom Rinpoche, and famous texts by Dolpopa Sherab Gyaltsen and Karma Chakmé, for example.