About Tibetan Annals

The Tibetan Annals, or Old Tibetan Annals (OTA), are composed of two manuscripts written in Old Tibetan language found in the early 20th century in the "hidden library", the Mogao Grottoes near Dunhuang in northwestern Gansu province, Western China, which is believed to have been sealed in the 11th century CE. They form Tibet's earliest extant history.