Reezahn is a desert country located in central Zarhanna, on the world of Lezaria. Its surface is little inhabited, while most of its denizens reside in an extensive network of caverns beneath the surface. The caverns are mainly populated by trolls, goblins, and orcs.

Reezahn is bound on the south by Thalarey and Kedresida, on the west by Garateck, on the north by the Great Bird Lake, and on the east by Tregas Valley.