The Vault of the Three Fingered Flame

From the introduction:

A potent combination of sandstorms and tectonic activity have recently unearthed an ancient vault in the desert. Countless years and the crushing weight of the stone and sand have rendered the once impenetrable doors useless. Bandits were the first to breach the vault; the more courageous of the crew entered in search of valuable salvage; they never emerged. Their more reticent companions spoke of it later, deep in their drinks, and about the unwholesome yellow light that emerged, and the sound of laughing.