D&D 5E: Original Adventures Reincarnated #9 Caverns of Thracia For a thousand years, evil has skulked in the darkness of forgotten vaults and concealed passages. Meanwhile, the surface dwellers bicker and squabble, unwary of a lingering malevolence. And still, they wait… A sprawling underground 5E campaign for 1st through 10th level characters that will take at least one year to complete.