Arkansas State Parks Trip Ideas Filter Park Crater of Diamonds Historic Washington State Park Region Park Activity Trail Type Trail Difficulty Author Date Published July 2022 December 2021 September 2021 November 2020 August 2020 May 2020 April 2020 February 2020 January 2019 May 2018 July 2017 February 2017 August 2016 April 2016 March 2016 February 2016