BY-SA 4.0 Creative Commons Attribution-Share Alike 4.0 truetrue English Matt Covington, speleologist Wikimedia username: PJakopin author name string: PJakopin...
travel. Date 23 March 2014 Source U.S. National Park Service (http://npmaps.com/wp-content/uploads/joshua-tree-covington-board-map.jpg) Author U.S. National...
