Grand Teton National Park, Wyoming. Paddling on Lily pad-covered String Lake below Grand Teton Peak in Grand Teton National Park in northwest Wyoming. String Lake takes it name from it long string bean-like shape. As the land subsides at the eastern edge of the Teton fault, numerous lakes have pooled along the base of the Teton Range including the much larger Jackson Lake just to the north. The waters of Leigh Lake flow into String Lake a few miles north of here.