Nope. In the mine you cross a little bank of water, then can drop down into a lower place in the mine. There is a Dwarf by the name of Stonetooth down there. No ladders once you're down there that I could find, and I looked around for three hours before I asked for a group gate.
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There is a ladder down there, but it's kind of useless since it just takes you out of the pit and back to Stonetooth area.