Visit Jewel Cave and enjoy the monthly Junior Ranger childrens’ activity program. The June program, Mystery minerals is perfect for Pee Wee Ranger (ages 3 and 4), Junior Ranger (ages 5 to 12)  or adults (who like to act like kids!) wanting to learn more about geology and earth science. Use simple hands-on experiments and demonstrations to learn from park staff on how to identify various rocks and minerals. FREE