Even when skies are clear blue in Guadalupe Mountains National Park, haze is sometimes seen near the horizon in the surrounding desert. In that situation, the sunset illumination on the mountains at the edge of the park can be quite beautiful. An example is this shot of El Capitan and the ridge upon which it sits.
As I was taking these photos, it almost appeared to me that the rocks at the right side of the ridge below El Capitan were being held back by an artificial fence-like structure. A tighter shot of El Capitan showed that not to be the case.
The above photos were taken from south-southeast of El Capitan. Looking in the opposite direction, one sees the approximately 5300-ft-high Delaware Mountains along the eastern side of the highway leading into the park. This mountain range was nicely bathed in the sunset light that afternoon.
Aiming the camera to the right of the above scene revealed widely scattered foothills of the Delaware Mountains.
Incidentally, the highway seen at the lower right of the above photo is the one leading directly west to El Paso, or if one takes the Texas highway branching off it, directly south to Van Horn.
The location from which these photos were taken is shown on the map below. Zoom in for more detail.