This map started out as a bit of a practice. I wanted to make a map with overlapping passages and tunnels. I got some done, but not as much as I hoped for. Maybe next time...
Anyhow, this map turned out to have a couple of interesting ideas starting from bars blocking the way and working as an incentive to find an alternative route, and a trapdoor that might drop the adventurers into a cave inhabiting some nasty critters.