I wanted to depict a scene from Jean M Auel's "The Valley of Horses", set during the Ice Age.
Here is the quote which I decided to work from:
"The cave was not large but not small either. The walls angled back from the entrance, widening until they came to a fairly straight back wall. The general shape was roughly triangular, with the apex at the mouth and the east wall longer than the west."
If you want to see the rest of the process you can check out my Tonal Study:
And my Color Comps:
Here it is!