Ancient Stone Portal

For this painting I was imagining an ancient stone portal that's been deactivated for a long time. I used gradient maps to assign the colors to the values of the painting. The advantage of using gradient maps is that I made the color of the vegetation darker than I had first imagined it in my head. As you can see on the value scale, the vegetation was supposed to be lighter, but after testing some colors I decided to go with the green that you see.