Trash Cemetery on Snezka, Kralovehradecky kraj, Bohemia(CZ), 2015

This "trash cemetery" attempts to explain the harm done by litter, and by solid waste in general, due to slow decomposition rates, showing in this case the decomposition rates of cigarette filters, gum, orange peels, paper, and apple cores. I'm actually skeptical that a cigarette would degrade in only 10 years, but it's possible, as I'm not an environmental scientist. Gum can vary, too, of course, as I've found gum that was clearly decades old (by circumstantial evidence).