Various artists

Artist depicted two classic impossible figures - Penrose tribar and Devil's Fork - and also two more rare impossible figure - impossible ring and impossible arch. The artwork was done with markers on paper. Despite the seeming simplicity of the picture, it contains a lot of small details that lead to consider the artwork again and again.

He also created an artwork with three impossible rings, which reminds Escher's artwork "Three spheres I".

Artist's deviantART profile http://rawjawbone.deviantart.com