Camping at Graham Cave was a very nice time. We walked the Loutre River Trail and fished in Loutre River - it was a beautiful hike and the river scenery was beautiful. Before leaving, we parked near the picnic area and walked the Graham Cave and Fern Ridge Trails. The cave itself is underwhelming if you are expecting something like Fisher Cave at Meremec State Park, but it has an interesting story and I love rock formations of all kinds!