US Border Wall Organ Pipe

Construction crews perform a controlled detonation at the base of Monument Hill in Organ Pipe Cactus National Monument west of Lukeville, Ariz., on Wednesday, Feb. 26, 2020. Construction crews in southern Arizona have recently began blasting hills at the site to clear space for a new border wall system, bulldozing through a place called Monument Hill to construct a 30-foot (9-meter) steel wall along the U.S.-Mexico border. (Josh Galemore/Arizona Daily Star via AP)