Arkansas State Parks Trip Ideas Filter Park Historic Washington State Park Bull Shoals - White River Cossatot River Davidsonville DeGray Hobbs State Park Conservation Area Lake Dardanelle Mount Magazine Ozark Folk Center Prairie Grove Battlefield [X] Crater of Diamonds [X] Pinnacle Mountain Region Southwest Central Article: Park Activity Diamond Digging Climbing Hiking Watchable Wildlife Article: Trail Type Day Hikes Article: Trail Difficulty Strenuous Author Waymon Cox Ron Salley Date Published December 2019 November 2019 October 2019 August 2019 July 2019 June 2019 [X] May 2019 April 2019 March 2019 February 2019 December 2018 October 2017 September 2017 June 2017 May 2017 December 2016 October 2016 September 2016 [X] August 2016 June 2016 March 2016 Summer in Full Swing at the Crater of Diamonds May 01, 2019 ⁄ Waymon Cox Greetings from Crater of Diamonds State Park! This past Memorial Day Weekend marked the beginning of summer hours and activities at the Crater of Diamonds. From now through August 10, the park’s... A Successful Four Months of Diamond Finds May 01, 2019 ⁄ Waymon Cox Greetings from Crater of Diamonds State Park! So far, 2019 has been a productive year for finding diamonds in Arkansas. By the end of April, our park staff had registered 177 diamonds, compared to 139... Is Pinnacle Mountain a Volcano? Aug 01, 2016 ⁄ Ron Salley Pinnacle Mountain stands about 1,000 feet above sea level, is on the extreme eastern edge of the Ouachita Mountain range, and sits where three rivers converge.