From PathfinderWiki

The Ebonwall, sometimes called the Ebonwall Forest, is a very large woodland in southern Virlych, in Ustalav. The forest lies at the foot of the south-western Hungry Mountains while the Path River marks the forest's southern border. The north-eastern regions of the forest spill over the border of Virlych into the neighbouring county of Amaans at the southern end of the Ghorcha Pass.1 The forest contains some of the magical protections, called witchgates, that Tar-Baphon created to protect his capital, Gallowspire.2