Arkansas State Parks Trip Ideas Filter Park Crater of Diamonds Devil's Den Region Central [X] Northwest [X] Southwest Park Activity Diamond Digging Mountain Biking Trail Type Mountain Biking Trail Difficulty Easy Moderate Strenuous Author Meg Matthews Arkansas State Parks Staff Matt Manos [X] Monika Rued Date Published April 2020 March 2020 November 2018 September 2018 March 2018 November 2017 October 2017 September 2017 [X] June 2017 May 2017 January 2017 December 2016 [X] November 2016 October 2016 August 2016 March 2016 Crater Diamond Find: 2.78-Carat Way Out Yonder Diamond Jun 2017 ⁄ Monika Rued A couple spotted a large brown gem at Crater Diamonds State Park that turned out to be a 2.78-carat diamond. 2.65-Carat Diamond Found at Crater of Diamonds State Park Jun 2017 ⁄ Monika Rued A 25 year old woman thought she had only picked up a piece of glass at Crater of Diamonds State park, but in reality, she found out she had discovered a 2.65-carat brown diamond. Beyond Mountain Biking in NWA Nov 2016 ⁄ Monika Rued Northwest Arkansas has a lot to offer, from our mountain biking trails, excursions, parks, and conventions. Once you're done biking, stop in on one of our craft breweries or local restaurants. Arkansas State Park IMBA World Summit Bookend Rides Nov 2016 ⁄ Monika Rued Arkansas State Parks has been involved in mountain biking since the 1980s and still have a variety of rides, competitions, trails and bike shops.