Devil's Lake State Park in Baraboo is a spring fed lake surronded by tall rocky cliffs. The State Park offers hiking, rock climbing, swiming from two sandy beaches, food & drink, camping, boat & canoe rental. From the web site - Founded in 1911, Devil's Lake is the third oldest state park in Wisconsin, the largest, and the most visited. Devil's Lake offers magnificent views from 500-foot quartzite bluffs overlooking a 360-acre lake. Enjoy lakeshore picnic areas, sandy swimming beaches, 29 miles of hiking trails, or ease into the backcountry solitude. Devil's Lake is a beautiful year-round park with an intriguing natural history along the 1,000-mile Ice Age National Scenic Trail. - This state park is located by some of the best riding roads around S/W Wisconsin.