Yamanism is a non-theistic religion. Its main belief is that there is a sacred mountain called Koin Mountain in the Yukon. They also believe in the Coin King who lives in a temple on top of Koin Mountain. Yamanists believe that all who accept the Koin Mountain will dwell there as spirits in the mountain.

The religion was founded by Zuo Tzu, a Chinese prophet. Although he didn't specify the location of Koin Mountain, he did say it was in "a cold, snowy land". Scholars assume it is in the Yukon.