Bob the cat is from runescape, but idk if I actually based if off of that. and getting killed by a guy named bob the cat is just a win. The names just go good together lol

I know some other names + animal name that go together lol. But ya with the underground vault you need to fill all the empty space with signposts, so that nobody can tunnel in. If they do, they cant go down the ladder.
currently I have a brickwall and village claim and 2 mansions under ground 2 layers deep. I got lucky in finding it. My problem is it has a hole where the gate was, and when my vault got killed when I quit I lost the tons of metal I had in it, so I cant make strongboxes to block the hole

... And someone killed our Iron mine base and blocked the mine shaft ladder, so no metal for me lol...