From the back of the book:
Four Pharaohs, One Tomb, Two Teams Of Tomb Robbers
The deadly pyramid tomb of the Four Pharaohs of Ascension has finally been discovered and the race is on to plunder its priceless treasures. Untold riches await the winner, but the prize might instead include an eternity of undead servitude.
Entombed with the Pharaohs is a journey adventure for 6th-level characters compatible with the world’s most popular fantasy roleplaying game. This adventure includes details on the city of Sothis and the ancient tomb that lies nearby, as well as details on rival adventurers bent on getting to the treasure first.
This adventure is set in Osirion, a land of shifting sands, scorching sun, and deadly ruins. This desert nation is part of the PATHFINDER CHRONICLES campaign setting, but can easily be dropped into any world.