The separate road-end viewpoint provides a quick, wheelchair-accessible view of the canyon mouth. For the river-level view, follow the short maintained access trail: 1.6 miles round trip, about an hour. It crosses Terlingua Creek, climbs a steep bank on concrete steps, then drops among boulders to where the canyon wall meets the Rio Grande. The creek can be dry sand, mud, or flowing water after rain; check conditions and turn around if it is deep or swift. Stay on the maintained route rather than trying to skirt the creek through the cliffs.
From the viewpoint, include the river below the walls to show the canyon’s scale. The approach trail brings you closer to the limestone and the narrow mouth.