I don't know what the concept is. This is the most cosmic thing in the dungeons, but is it a dungeon, or is it another place? When you get the root chalice, it says that it is another land, but it looks like the dungeons before it.
I can't find any real lore other then what the chalices say.
What is this place's lore
(To clarify, I wish to understand the place itself and mentioned the chalices for their descriptions only, to show what they mention)