From PathfinderWiki

Everrest is the ruins of a Chelish manor house built in the Nesmian Plains of Nirmathas by House Arvanxi before Cheliax lost its claim to Molthune and Nirmathas. Abandoned by House Arvanxi since the Chelish Civil War, the current occupants of the ruins are exiles of the Thornscar orc tribe, led by Krov Thirdmother, a fanatical follower of Lamashtu.1


  1. Crystal Frasier. “The Nesmian Plains” in Trail of the Hunted, 69. Paizo Inc., 2017