Seminole Canyon State Park April 2017 CC BY-NC 4.0 I did not realize how lucky I was that so many ocotillos were leafed out. CC BY-NC 4.0 The canyon, on a mostly-dry tributary to the Rio Grande. Pictographs under that overhang. CC BY-NC 4.0 CC BY-NC 4.0 Pictographs CC BY-NC 4.0 Rio Grande, still part of Amistad Reservoir