The Pool of Ask'ar is an underwater lake located in a large cavern within Blackfathom Deeps. It is the location of Ghamoo-ra, and through submerged passageways, Argent Guard Thaelrid and Lady Sarevess. The Lorgalis Manuscript can also be found here. The pool is home to numerous turtles, crabs, and naga.

The Pool of Ask'ar lies beyond the Drowned Sacellum, and leads through a long series of tunnels, past Gelihast and Lorgus Jett to the Moonshrine Ruins. Access to these tunnels is on the south side of the pool.