Ataaz Kahakla

Ataaza Kahakla, meaning Gorge of Death in the Chultan language, was a canyon on the River Tath in Chult.

Description
The cliff walls, which varied from 50 to 200 feet high, were lined with row upon row of coral. Though dead, the coral retained its rainbow colors. Mixed in among the coral were intact skeletons of plesiosaurs, giant shark, and other sea creatures.