This isn’t really Mars since there is no water on Mars and I don’t know of anyone yet who has managed to go there. Instead this is from Panama City, Panama shot off the fort side of Casco Viejo.
When I went to edit this it felt better in monochrome. So I went to move it into Tonality CK and the conversion left the red rocks looking just dark so to remedy that I went into the hut/saturation slider. I slid it and got the color still in monochrome to look better but switched it over to saturation and slid it right.
I am not a fan of selective color as a rule. However, I think it works as it just adds drama to the image that I think makes it work. Once I was content with what I had bit of a dodge and burn and called it a day.