Arkansas State Parks Trip Ideas Filter Park [X] Cossatot River [X] Devil's Den Region Southwest Park Activity Trail Type Trail Difficulty Author Adam Leslie [X] Rebekah Spurlock [X] Shelley Flanary Date Published April 2016 [X] March 2016 Living Underground at Devil’s Den State Park Mar 2016 ⁄ Rebekah Spurlock The unique sandstone crevice caves found at Devil’s Den State Park offer an intriguing immersion into the literal center of the layers of geology that support all life in the park. A Wild and Scenic River Mar 2016 ⁄ Shelley Flanary Do you hear that sound? Do you hear the music? What could it be? You are standing approximately just southwest of Little Rock, in one of the most spectacular river corridors in the central U.S.