news and works in progress from Shaun Tan
What this painting is about? it looks like an abstract art. You should have provided some more information about it so that it would have been easy to understand.
It's basically a painting of a cliff. But worth noting that art is not about comprehension (although that's a small part of it), so much as ambiguity, of never fully understanding, and enjoying it. It's knowing that you don't really know much, so there's lots more space to think and feel.