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Pathfinder 5: Sins of the Saviors

Lake Stormunder is a freshwater lake located in north-western Varisia, close to the border with the Lands of the Linnorm Kings. It is fed by numerous rivers and streams from the Kodar Mountains,[1] as well as plentiful underwater geysers which cause its surface to roil and churn, giving the lake its name.[2] The Steam River flows out of the lake, eventually emptying into the Steaming Sea.[1] On the lake's eastern shore lies the Rimeskull mountain, so named because of a roughly skull-shaped outcropping near its peak. At the foot of the mountain is an almost perfectly preserved Thassilonian ruin called the Sihedron Circle, which has only been recently revealed to be a magical portal to a location known as the Runeforge.[3]