From publisher blurb:
Monsters and other threats from the world of Athas.
This supplement for the Dark Sun Campaign Setting collects the most iconic and dangerous monsters of the Dark Sun campaign setting into one handy tome. It also contains other hazards and threats found in the desert wastelands and dungeon tombs of Athas.
The creatures and threats presented herein make worthy encounters for Athasian heroes or the heroes in your "homebrew" D&D campaign.