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abandoned old railway tunnel used for hiking in a natural park
A freight train emerging from the Catoctin Tunnel on the C&O Canal Path  on the Appalachian Trail near Harpers Ferry
Dark rectangular corridor under the bridge
View of an Old Culvert in Autumn in Eastern Ohio
Inside a cicular kiln in Mildenberg (Brandenburg, Germany).
Fairfax Station, Virginia, USA - March 14, 2024: Active railroad tracks pass over the so-called “Bunnyman Bridge” at the Colchester Overpass in Fairfax County.
abandoned railroad tunnel
The entrance and surrounding of a tunnel in red river gorge kentucky
Long dark tunnel with small light at the end
The entrance to the Paw Paw Tunnel on the Chesapeake and Ohio Canal in West Virginia. The tunnel is 3,118 ft. long and was completed in the mid 1800s.\n\nThe image is also largely symbolic with a pathway leading into darkness, the great unknown of what is to come as a person starts a new beginning in life.
Lava tunnels on the island of Santa Cruz in the Galapagos Archipelago, Ecuador
View of entrance to a tunnel
Dirt road under a highway overpass in the White Mountain National Forest, New Hampshire, USA
First World War bunker on the Italian-Swiss border
tunnel
Lock 33 of the C&O Canal is located across from Harpers Ferry at the base of Maryland Heights, with its old lockhouse once housing the Salty Dog Tavern, the ruins of which are pictured here - Harpers Ferry National Historical Park
Moonville Tunnel in Ohio - Coal mineshaft tunnel - in Autumn
tunnel in black and white with silhouettes of people in the background
A woman walks towards the light at the end of the tunnel. Copy space. Concept image.
Trolley Tunnel on canal lock trail in Blackhand Gorge State Park
A gold miner is silhouetted in the narrow shaft of an abandoned gold mine.
Graham Cave SP - Cave Entrance - 1998. Scanned from Kodachrome 200 slide.
A long, dark, creepy tunnel.
Mysterious exit from a cave to green forest. Light at the end of the tunnel concept. Footpath on hiking trail, cave in the mountains. Exploration, trekking trail. Cave corridor.
Gunma, Japan -August 11, 2024: This is the Usui Pass Tunnel. It is a railway tunnel that passes through Usui Pass (between Yokokawa and Karuizawa) that opened in 1893.The line is now abandoned, and you can walk through it.There are currently 10 tunnels on the old line that you can pass through.\nIt has been designated as an Important Cultural Property of Japan, along with Usui Third Bridge (Megane Bridge), the largest 4-arch bridge in Japan.
A bike and hiking trail on a former railroad line with tunnel.
Light at the end of tunnel.
Old tunnel of the PlazaolaA's  train. Leitzaran Valley, Navarra. Spain
Looking down the length of a gypsum mining tunnel (adit) inside an abandoned quarry.
Free Images: "bestof:Paw Paw Tunnel North portal approach.tif en HABS says 1 GENERAL VIEW OF HOLLOW LEADING TO NORTH END OF TUNNEL - Chesapeake Ohio Canal Paw-Paw Tunnel 155 2 - 155"
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