either got isekai'd or tl was done by different group than rest and they deleted itWhat happened to chapter 1?
Think Catacombs of Carthus to Boreal Valley, they could have slowly moved up in elevation as they move toward the treasure room and then beyond, and there is no sense of how deep the boss room is (they didn't even know where they were in the dungeon in general at that point). The cave could have been on ground level, and the ceiling is so high because they were inside a mountain (the entrance is inside a small hill for example). There is no way to tell.wait, aren't they at the bottom of a dungeon, did she make the dungeon to guard her house or did she make her house at the bottom of a dungeon for protection???
Nah given her personality and this dungeon being man made she will likely put some spare change beside the undead dragon to find adventurers of the old style who will then after proving themselves worthy be lured in by the treasury to become her champions (again just like Dan did before).Please don't tell me she placed an undead dragon in the cave side entrance to guard her personal treasury