I'm new to the nodes world and i'm trying to setup my own with Geth on Windows. I was wondering what the /ancient folder does for the Node. Please correct if i'm wrong, but synthetically this is what the other folders should do:
/keystore should contain my wallet keys, if i have setup one.
/geth should contain the Node itself,the blockchain data such as blocks and the cache.
So, what the /ancient folder is for?