German street artist 1010 (previously here and here) paints murals that seems to disappear within the walls on which they are painted, each work an optical illusion with brightly ringed shapes. The effect is a 3D cavern on a solid surface, produced by 1010 layering 6-10 warm or cool shades on top of a dark background or center. He has recently applied this technique across the globe, including a mural for the Backside Gallery in Marseille, France and a work on a large public building for this year’s POW WOW Hawaii Festival in Honolulu. You can see more of his recent pieces on his Facebook and Instagram.