Archeologists are confronting an “unfathomable” loss as border wall construction is set to cut across ranches that are home to unique historical sites, many of which haven’t been fully studied.

Millennia-old canyon art, a historic adobe church and a mountain sacred to Indigenous groups are part of sites near Big Bend in Texas and other borderland areas.

Archeologists are confronting an “unfathomable” loss as border wall construction is set to cut across ranches that are home to unique historical sites, many of which haven’t been…