Devil's Lake State Park

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Devil's Lake State Park is a state park located in the Baraboo Range in eastern Sauk County, just south of Baraboo, Wisconsin. Devil's Lake State Park is the biggest state park in Wisconsin.

This 9,217-acre (3,730 ha) state park is known for its 500-foot-high (150 m) quartzite bluffs along the 360-acre (150 ha) Devil's Lake, which was created by a glacier depositing terminal moraines that plugged the north and south ends of the gap in the bluffs during the last ice age approximately 12,000 years ago. The sand at the bottom of Devil's Lake is thought to be deposited by glaciers. Devil's Lake is situated in the Baraboo Hills.

Loess covers most of the hills and forms the parent material of a brown silt loam soil. During the autumn, the park's brilliant foliage makes it a popular attraction.

One of the most notable features of the park is the presence of large talus slopes on three sides of the lake.