Mark Birkle:
Tunnel Mill 2
Mark Birkle:
Tunnel Mill 1 - 1907
Mark Birkle:
Possible Entrance to the Mill Tunnel - GPS Coordinates
Mark Birkle:
Tunnel Exit - GPS Coordinates
Mark Birkle:
Tunnel Mill Article 1983
Mark Birkle:
Mill Tunnel - East Fork State Park
Mark Birkle:
Further Into The Tunnel
Mark Birkle:
Deeper Into The Tunnel
Mark Birkle:
Bill In A Section of the Tunnel with A High Ceiling
Mark Birkle:
Entrance Into The Back Room
Mark Birkle:
The Back Room - End Of The Line
Mark Birkle:
The Way Out Of The Back Room
Mark Birkle:
Approaching The Tunnel Entrance
Mark Birkle:
Hole Between The Road And Hillside
Mark Birkle:
Tunnel - The Way In, and the Way Out
Mark Birkle:
Tunnel for Tunnel Mill - Low Ceiling On The Way To The Back Room
Mark Birkle:
Mill Tunnel - Glad To See Daylight
Mark Birkle:
Mill Tunnel - Coming Up The Tube From The Back Room
Mark Birkle:
Mill Tunnel - Mark