Find out fun and interesting facts about what makes Devil’s Lake rocks, rock! Join the park naturalist for a hike up the east bluff of Devil’s Lake State Park to learn about the park’s unique geology and see the beauty the park has to offer. We’ll spend the morning hiking the scenic east bluff and checking out some of the park’s famous rock formations. This hike will be about 3.5-miles and is best for adults and children ages 10 and older. Meet at the North Shore Visitor Center.