A number of active fault underlie Lake Clark National Park and Preserve's rugged terrain. The longest, at 225 km, is the Lake Clark Fault which lies between the Alaska Range and the Chigmit Mountains, under the lake itself and Lake Clark Pass. To the east are the Telaquana and Mulchatna faults.
Did You Know?
The nest and eggs of the surfbird were a mystery until 1926. The species is extraordinarily far-ranging, and in winter is found from Alaska to Tierra del Fuego in southern Chile.