The largest of the towns in the Realm of the Mammoth Lords, Icestair exists at the base of the glacial wall that dominates the Crown of the World. The wall is marked here by a wide set of human-sized steps, carved into the ice and overlaid with heavy blocks of volcanic stone, winding up the face of the sheer ice sheet. In addition, at the top, great winches are mounted at the glacier’s edge, which lower wagons and sledges that survived the perilous crossing.
Icestair is run by Po La the Bureaucrat. Po La is a Tian who claims to have been a civil officer in the service of the Fire Empress Zai Ming, until he ran afoul of that ruler’s daughter and was forced to flee for his life. Whether or not this tale is true, he and his assistants arrange for guides to Hillscross or Wyvernsting, as well as oversee the upkeep of the Icestair, carving new steps when the old ones erode, and replacing those winches that collapse. In the perennial cold of the region, strengthened by the cryomantic enchantments of the Witch Queen, such collapses are not as common as they might otherwise be.
Sources: Pathfinder Chronicles Campaign Setting