Dark Canyon

Description
The Dark Canyon is the location of the Main Seal called the Holy Gem that seals away the 3 prime evils. Due to this, the canyon is constantly guarded by the Elemental of Light: Crystal because her Pendant is made of the same material as the Holy gem: Crystalized Light.

Appearances
It first appeared in Elementals Worlds Collide book 1 when Crystal was protecting the Holy Gem from Bill Cilestipher (Bill Cipher infused with Solaris' Spirit).