Pwnzer
Eon is the floor boss, I assume, or we will get some plot twist and there will be a boss in the ruins. I think the city was elf built and the ruins have something to due with the dungeon earning the name cave of myths. Just like in the skeleton floors there was furniture, the marshlands had the wired gauntlet & water mana mist place and not to mention the bosses I think the ruins are something related to outside history maybe even the gods.