From the introduction: In an isolated valley lies the legendary Mound of Mordibus, the supposed final resting place of the infamous orc necromancer, Mordibus. Universal Adventures Adventure Module AO4 Mound of Mordibus describes the Valley of the Mound, an isolated vale in the Borderlands of Toth. The Mound of Mordibus can be used independently or as an expansion pack for AO2 The Borderlands of Toth.