Big Bend National Park is just amazing. This enormous crevice is Santa Elena Canyon. The orange dot in the foreground is the lovely Natasha getting us credit for the virtual geocache located here. The canyon is contained in an escarpment that rises 1500 feet and was once the bottom of a primordial inland sea. The Rio Grande River carved out this channel millions of years later. Texas is on the right; Mexico on the left. Santa Elena Canyon runs to the northwest about eight miles. You wouldn’t know it to look at it now, but this section of the Rio Grande, which is flowing towards you, wasn’t navigated successfully until 1885, when the Texas Rangers pulled it off. All that showed up from previous attempts were planks and splinters. You can hike about 3/4 of a mile into the canyon. At the end of that, the walls go completely vertical right out of the water and the canyon is only 30 feet wide. We made the hike and were not disappointed. And much to our surprise, we had the place to ourselves.