Border Wall Map Vanishes, Raising Stakes for Southwest Public Lands

The Smart Wall Map covered the full 1,954-mile U.S.-Mexico border and had been updated weekly. Before it disappeared, travelers could compare where CBP said it had already built about 644 miles of primary wall and about 75 miles of secondary wall, where about 535 miles without barrier were supposed to rely on detection technology because of rough terrain or remoteness, and where about 549 miles of technology would be added in places that already had barrier. That mattered because a border project can change more than a line on a map. It can shift access to a trailhead, affect a scenic drive, complicate a river shuttle, or turn a quiet segment of public land into a construction zone.

Big Bend National Park shows why the loss stings. The park draws more than 500,000 visitors a year and shares 118 miles of border with Mexico. In early March, CBP quietly removed two stretches of planned wall from the Big Bend area and moved them back to detection technology. By April 22, the map had changed again, showing four sections in or next to the park marked for wall or vehicle barriers, along with a broad corridor of technology and patrol road. Then the map vanished, leaving visitors with no easy way to see whether the next change would hit a river corridor, a desert drive, or a backcountry access point.

That uncertainty reaches beyond Big Bend. The National Parks Conservation Association says border-wall debates affect six parks or protected areas, including Big Bend National Park, Organ Pipe Cactus National Monument, Amistad National Recreation Area, Chamizal National Monument, Coronado National Memorial, and the Rio Grande Wild and Scenic River. The group has said existing border walls total about 650 miles and were built without environmental reviews.