Related Clues:
- Subway artwork, e.g.
- Plaster painting
- Sistine Chapel artwork
- Picture on a ceiling
- Big picture?
- Painting on plaster
- Michelangelo's "The Last Judgment," e.g.
- Chagall piece
- Watercolor on wet plaster
- Diego Rivera creation
- Painting technique
- Large wall picture
- Many a Keith Haring work
- It's the big picture?
- Recombined 'forces'?