These vast sands hide the remnants of the largest assembly of ruins dating back to the beginning of the Runic Era of the Core timeline. Many of these ruins still sparkle with the magical life imbued by Giantkin runecraft. As such the creatures and the people stay to dive and extract the old information that could be. Be warned, the creatures of this desert are just as old an ancient as the Giants' handiwork themselves.
Explorers and scouts always attest there is something - just SOMETHING wrong with different pockets of sand dunes in this region. It wasn't until Voggutain Axemantle, a Dwarf Adventurer, led an exploration crew an discovered these sands permeate a dense psionic field. Unable to tap into it, he theorizes this was how many inhabitants were able to manipulate the very terrain - not by burrowing but by literally thinking it into or out of existence. This discovery also validates the existence of two of the largest clans of Thri-kreen of the Hive Collective fighting their ways in the mountains and plateaus scattered around the desert.