TUCSON, Ariz. — Construction crews in southern Arizona have started blasting hills at Organ Pipe Cactus National Monument to clear space for a new border wall system.
Crews are bulldozing through Monument Hill to construct a 30-foot (9-meter) steel wall along the U.S.-Mexico border, the Arizona Daily Star reported.
The wall is part of a 43-mile (69-kilometer) project on national monument land about 115 miles (185 kilometers) west of Tucson, officials said.
Organ Pipe was designated as an International Biosphere Reserve by the United Nations and is part of the national parks system, officials said.
“The construction contractor has begun controlled blasting, in preparation for new border wall system construction, within the Roosevelt Reservation at Monument Mountain,” Customs and Border Protection said. “The controlled blasting is targeted and will continue intermittently for the rest of the month.”