Seven Lakes Basin is a formerly-glaciated mountain lake basin located at the headwaters of the Sol Duc River in Olympic National Park. A hiking trail to the basin is 19 miles (31 km) round trip with about 4,000 feet (1,200 m) of elevation gain. The loop trail starts by following the Sol Duc River near Sol Duc Hot Springs, traversing south past Sol Duc Falls before beginning a rapid elevation gain to eventually arrive at the High Divide separating the Hoh River valley from the Sol Duc valley, with views across the Hoh Valley to Mt. Olympus to the south.