Arkansas State Parks Trip Ideas Filter Park Jacksonport Lake Charles Lake Frierson Moro Bay White Oak Lake Withrow Springs [X] Crater of Diamonds [X] Lake Catherine [X] Pinnacle Mountain Region Southwest Central Park Activity Hiking Climbing Diamond Digging Watchable Wildlife Trail Type Day Hikes Trail Difficulty Strenuous Moderate [X] Easy Author Arkansas State Parks Staff Meg Matthews Date Published December 2016 April 2016 March 2016 1.73-Carat Diamond Found at Crater of Diamonds State Park Dec 2016 ⁄ Meg Matthews Crater of Diamonds State Park is the only public diamond mine in the world. If a visitor finds a diamond its their's to keep. Recently, two guests who go to Crater of Diamonds on a regular basis found the third-largest diamond at the park in 2016. The diamond is a 1.73-carat white gemstone. The new owners of this diamond say they haven't yet decided what they will do with... An Adventure in Spring Apr 2016 The spring birds are back and filling up the air with their songs. The winter bleakness is behind us. The warm air hits my face as I hike on one of our trails here at Lake Catherine State Park. Pinnacle Mountain State Park Rocks! Mar 2016 ⁄ Arkansas State Parks Staff Tucked away in central Arkansas, Pinnacle Mountain is one of the most accessible state parks for hiking, backpacking, climbing, camping, and biking.