OOC: I will NPC PolterGhost for now.
The left passage curves some to travel due east through the mine. The shaft opens up into a large excavated chamber, 50' by 50'. The tracks make two loops through the chamber, one to the left, and one to the right, on either side of the central track that extends across the chamber into the dark continuation of the tunnel beyond. Two mine carts, one each on the left and right loop, are in this room. On the left side, something resembling a stalagmite rises in the chamber, but it is apparently made of stucco painted red.
A clatter is heard as four skeletons rise up from their positions at the chamber walls, brandishing picks! Two of the skeletons are shorter and thicker, clearly dwarf skeletons.