From PathfinderWiki

Crackspike is a formation of prospectors' bones in Devil's Perch, erected as both a warning and summer roost by the area's native Windspire tribe of strix around 4690 AR.1 The Chelish provincial authorities attempted to secure Crackspike around 4711 AR as a base for mining silver from Sorvus's Strike about two miles northwest of Crackspike; the strix subsequently burned the settlement to the ground.2