From PathfinderWiki

Hvorsuli, also known as the "Snow Spires", is a ruined city of thin spires and massive gates located within a glacier in northern Iobaria. Only the foremost gatehouse and a few broken domes lie outside the glacier and allow treasure hunters and explorers access to the ruins. The creators of the city are unknown, but there are mentions of a great power that glows in the heart of the city, contained by the ice god Rheth.[1]