Forest Macro.
Do you know what it is? For a long time I thought it was some kind of peculiar fruits or seeds. But as I found out, these are parasites that live on trees! There would be nothing surprising in them if there was no feature: in ancient times they were used as ink! Did you know that? I didn't know! It really was a discovery for me. And given that our world is rolling towards the Apocalypse, this information may be useful when humanity returns to live in caves and hunt mammoths.
In the last photo - an ordinary acorn 馃槈