Bön Religion

Bön Religion is indigenous to Tibet. Prior to the Arrival of Buddhism in the 7th and 8th century in Tibet. Later the Buddhism became a predominant religion and Bön practitioners had to move to the remote location to preserve their tradition. But much of the distinctive characteristic of Tibetan Buddhism is the Adaptation from the Bön religion. The Tibetan name of the Tibet itself if derived from Bön. We call our self a Beopa, Meaning Tibetan. The Followers of the Bön are called Bön-Po.

https://itibettravel.com/tibet/tibetan-religion/bon-religion/