Plywood/stone/pen & paint
One of my earliest experiments with 3D art.
The stone is from the Schuylkill river near Philadelphia and local sedimentary slate from upstate NY.
The shape is organic. The same outline presents a different but similar appearance when looked at from the opposite side as does everything, when viewed from another perspective or from memory.
The interconnected layers, lines, shapes and colors are common in my art.