When most skateboarders break their boards, the remnants of wood end up in the trash. Fortunately, the Japanese artists of Harvest by Haroshi are not like most skateboarders and instead chose to make art from the compressed and polished boards.
The layers of wood adorned with thin strips of color give the works an unexpected depth and the basic concept of recycling these trashed boards into something artistic is admirable in our consumption-happy world. As the artists' webpage says, "As a skater, I want to take responsibility of reusing skateboards when they were no longer usable. Also, as an artist I want to explore the possibilities of what can be done with skateboards."
I think it's safe to say both objectives were met.