Mount Susitna, also known as Sleeping Lady, is a 4,396-foot mountain in the U.S. state of Alaska. It is located on the west bank of the lower Susitna River, about 33 miles northwest of Anchorage, Alaska. The mountain is a prominent landmark in the Anchorage area and can be seen across the Knik Arm of the Cook Inlet from most of the city, especially at higher …Mount Susitna, also known as Sleeping Lady, is a 4,396-foot mountain in the U.S. state of Alaska. It is located on the west bank of the lower Susitna River, about 33 miles northwest of Anchorage, Alaska. The mountain is a prominent landmark in the Anchorage area and can be seen across the Knik Arm of the Cook Inlet from most of the city, especially at higher elevations.