Chasmism is the worship of Great Chasm. It’s relatively rare in most coastal areas, though it is the only religion the Dwarves of Tezra will admit to. Chasmism does not venerate Chasm as the Golden Way venerates Eiya, but rather Chasmism worships Chasm as a spirit of vague goodness.
The Golden Way presents Eiya as the focus of the world. Chasmism presents Chasm as a great force of the world beneath.