From the introduction: In the border country between the settled south and the savage north is a valley of twisted trees and thorny scrub where infamous sites of darkness and dread lie. Welcome to Universal Adventures Adventure Module AO3 Witherfang Vale. Located in AO2 The Borderlands of Toth, Witherfang Vale is home to such infamous sites as The Mound of Mordibus and The Bone Tower. The module brings you everything you need to explore the infamous vale.