A freshly cut tree stump, most likely cut with a chain saw.
This image was copied from slide film using a Canon EOS 5D Mark II mounted to an Asahi Pentax Auto Bellows II with Slide Copier and a Super-Multi-Coated Macro-Takumar 1:4.0/50mm lens.
The original image was made in the 1970's using Kodachrome film and Super-Multi-Coated Takumar 1:1.4/50mm, on a Spotmatic II