After our exploration of the Camino Real International Heritage Center it was still early in the day. We drove the roller-coaster like NM-1 past an interesting monument commemorating the Civil War Battle of Valverde into the refuge. The start of the trail didn't look too promising.
Soon we discovered the first inklings of there being a real canyon.
Eventually we made our way out of the canyon and traversed the rim. There were great views down to the distant wetlands.