I really like how you capture those textures and depth in these two wonderful locations. Don't give up on Red Rock Canyon. It's a huge state park with some much cleaner and lonelier areas. I went there last year and visited Burro Schmidt tunnel and we 4x4 drove all over tiny tracks in the higher lands. I want to go back and try to see some fossils and human artifacts, as well as visit the Old Dutch Cleanser mine.
Cheers!
RE: Joshua Tree & Red Rock Canyon State Park