Exploring caves, hiking to waterfalls and climbing over rocks may sound like adventures in an Indiana Jones movie. But these are among the many exciting activities to do with kids in U.S. state parks. 

While national parks generally get more attention, state parks also offer a bounty of outdoor fun and are often more easily accessible. Pack hiking shoes, a camera and binoculars for real-life adventures at these hidden gems. Be sure to stop by the visitor center for maps and tips from rangers before venturing out.