Underground Explorers: Entering the mine
Underground Explorers: Pretty messy inside
Underground Explorers: Moving off to our right
Underground Explorers: Hallway with shotcrete and plaster walls
Underground Explorers: Moving through another room
Underground Explorers: Another look at the dry
Underground Explorers: Dropping down through a collapse to the left of the portal
Underground Explorers: Inside the drift below
Underground Explorers: Massive Chicago Pneumatic compressor
Underground Explorers: Large flatbed car
Underground Explorers: Compressor valve assembly
Underground Explorers: Electrical panel
Underground Explorers: Another look at the compressor
Underground Explorers: Electrical panel
Underground Explorers: Heading deeper into the mine
Underground Explorers: Trolley motor (catenary powered electric locomotive)
Underground Explorers: Looking at the driver's station
Underground Explorers: Continuing deeper into the mine
Underground Explorers: Another trolley motor
Underground Explorers: The catenary wire is still hanging in places
Underground Explorers: A third trolley motor
Underground Explorers: A closer look at the third trolley motor
Underground Explorers: Acetylene generator
Underground Explorers: Rotted and collapsed timbers
Underground Explorers: A fourth trolley motor