I take that back. No spray paint
That lil' caboose is a cutie! Did you notice the spray paint?
Hiked to this portal entrance.... weeds, fallen trees and overgrowth may soon make the only way to get to it impassible.
Saw evidence that water is flowing into this entrance from further back, meaning the water is flowing downhill. That indicates that the south portal is at a higher elevation than the north portal more than 2,500 feet away. That makes sense, because USGS maps show the elevation of this portal is 1,355 ASL, the north portal elevation 25-hundred feet away is 1,326 ASL and further down Tunnel Hollow at the old New River Bridge on this abandoned line is at 1,225 ASL.