Dungeon Crawl Classics - Rise to Glory
From The Gazetteer of the Known Realms:
Ghetrian Desert, the: The vast stretches of the Ghetrian Desert (also called the “Great Desert” by locals of the region) encompass nearly all of the northern regions of the Lostlands. Once but a fraction of its current size, the desert has grown tremendously since the fall of the Sphinx Empire, creating a fiery wasteland in what was once a tropical paradise. The nalvor of Xa Deshret stubbornly believe that the growth of the desert is a parting curse from their departed Sphinx Emperors, and that the desert shall retreat and wither once the Sphinx return.
In additional to the abandoned cities of the Khonsurian Empire and the nalvor, the Ghetrian Desert is also home to wandering tribes of human and halfling merchants. These merchants traverse the majority of the Lostlands, and perhaps have a better perspective upon the entire Lostlands than any of the other creatures that live there.