Didn't do much, most of them are dead, and the survivors won't seem to mine. Made some crafts, doors, blocks, hatches, tables, thrones.

Probably 11 ambushes came along. They can't get inside though, and the elf merchants were butchered by those above. Fun times. Funny enough, the only levers I saw were down below with the forgotten beasts, so I don't know if you can get the front door bridge open.