The Pillar Tomb of Dumuzi is a strange, above-ground tomb. That is difficult to find and well-guarded. But once inside, it contains great treasure beyond the greed of any adventurer. This adventure is not written in the typical format. There is a before/after presentation of the information, as in before the PCs pillage the tomb and after they pillage the tomb.
And of course, if they never steal anything, nothing will happen.