Thornton Lakes

Thornton Lakes are located in North Cascades National Park, in the U. S. state of Washington. These paternoster lakes consist of three lakes located 1 to 1.75 mi southeast of Mount Triumph. Thornton Lakes can be accessed on foot from a trailhead in Ross Lake National Recreation Area. The hike of 5.2 mi includes a 2400 ft altitude gain and a 500 ft descent to Lower Thornton Lake. Two other lakes lie above the first one, unofficially named Middle and Upper Thornton Lakes. A designated backcountry camping zone is located at Lower Thornton Lake.