The first exposure has started on 2nd October in a forest. After half a year I will go and see what the square has been exposed to and document it again. I will make such squares in other places too, in different cities, and see what kinds of litter the squares will gather in 6 months. Funny thoughts while "cleaning up" in a forest come to mind, like: it makes no sense to speak of litter in a forest because every fallen needle actually is part of the forest and belongs there. But I decided that the moss was the basic layer and then removed everything else from it.
