From PathfinderWiki

The Deepmarket exists beneath the lowest levels of the Undermarket but just above Nar-Voth proper. The Deepmarket functions as a shadowy community all its own, deep beneath the City of Wonders. Its inhabitants include a wide range of races from the Darklands (with which the Deepmarket connects) including: ratfolk,[1][2] caligni, xulgaths, wayangs and more.[3]