From PathfinderWiki

Highforest is a petrified forest of unknown origin in the Nesmian Plains of Nirmathas. It is speculated that the cedar trees that made up the original forest were fossilized by magical ash from Earthfall. Aberrations and vermin have made the forest home.1


  1. Crystal Frasier. “The Nesmian Plains” in Trail of the Hunted, 70. Paizo Inc., 2017