Graham Fisher is a custom tattoo artist from Virginia specializing in realism and surrealism. He explains, "This is a skull I did in color pencil, its 20"x15" on illustration board, it took me 23 hours to complete, it is titled 'Alien Architecture'."
I like the fine cracks and smooth bone holes that look like reduced bone density. The shading in the hollows of the bone give it a sunken and warped look. This skull seems to be decomposing past the fleshy state.