This place is in New Mexico. Near by is popular mountain bike trails and this mesa is always cool view, I think top layer is pure gypsum. They mine it on top, but I think they left edge untouched to save the natural look.
Thank your Carol and Paula! It’s interesting that this paper size seemed very inconvenient at first. There’s no space for sky. But because of that I simply can’t paint an ugly sky. Just simple graded wash and leave it there. Greens are simply 2 colors. Prussian blue and Indian yellow PY 110. It’s so frustrating that all these replacement permanent yellow colors are so different from different brands. This combination is closest match to my all times favorite white nights green PG-8.
It was Interesting for me to to find new gray color I’ve used for mesa. Combination of yellow ocher and ultramarine blue.