Giant Springs State Park is a state park and recreation area that is home to the world's largest freshwater spring and the Rainbow Dam. Discovered by the Lewis & Clark Expedition in 1805, Giant Springs is famous for its crisp, crystal-clear waters which originate from the Little Belt Mountains and flow from the Madison Aquifer at a rate of 156 million gallons per day. The water remains at a constant 54 degrees year-round, and during the winter the warm vapors form beautiful ice-covered trees around the springs. The park offers a wealth of year-round activities, ranging from hiking, mountain biking, camping and picnicking to boating, fishing, bird-watching and a variety of ranger and educational programs.

4803 Giant Springs Rd, Great Falls, MT 59405, Phone: 406-727-1212

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