Out of the woods

We are an inventive species, we made all kinds of wonderful stuff.
Everywhere, in places that we no longer frequent, you can find creations of our species, abandoned and then forgotten. Most of our odds and ends will still be there when we are gone. Walking in the woods of the Périgord I discovered many remains of our creations. Wonderful, fantastic or disgusting, questions can be asked.

What will happen to them?