The riding stables are open in summer only. The visitor center is open as a warming hut on weekends in winter. Henry's Lake State Park Off U.S. Hwy. This busy campground and boat ramp are easily reached from U.S. Highway 20 just north of the main business areas of Island Park. Weather sweeps down from the surrounding mountain ranges, the Henry's Lake Mountains, the Centennials and the Gravelly Range.
Smart boaters keep an eye on the skies.
Lewis and Clark Caverns State Park Mont. Hwy. In 1937, Lewis and Clark Caverns became Montana's first state park. Above ground is a 40-space campground with several camp cabins, along with several miles of hiking trails. For a fee, rangers lead visitors through the bat-infested labyrinth each summer day. This primitive park encompasses a section of land that includes cliffs used for buffalo jumps by Native Americans.