User blog comment:WITHERBOSS 963/The Glass Desert/@comment-24751993-20160403114542

The Glass Dessert we could find is actually at the end of Feral Rock canyon. It was here in Pre-Alpha stages of the game, but as of 0.2.0 it was locked from access, and Slimes in it absent. It will be removed likely when the area will be reworked, and moved to somewhere else.