BUILDING BIG: All About Tunnels - PBS
Tunnel Basics Roll up your sleeves and dig in to get started with these structures. The Tunnel Challenge Through mountains, under rivers, beneath cities ... tunnels are no boring story!
Tunnel - Wikipedia
A tunnel is an underground passageway, dug through the surrounding soil/earth/rock and enclosed except for entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube construction techniques rather than traditional tunnel boring methods.
Israel Is Building a Secret Tunnel-Destroying Weapon ...
ISRAEL GAZA BORDER, ISRAEL - AUGUST 04: Israeli soldier seen inside a tunnel built underground by Hamas militants leading from the Gaza Strip into Southern Israel, seen on August 4, 2014 near the Israeli Gaza border, Israel.
Pendleton Underground Tours - Official Site
THE HISTORY OF THE PENDLETON UNDERGROUND TOURS. Pendleton Underground Tours ( P.U.T.) is a non-profit corporation that started in 1989, giving tours of Pendleton’s red light district.
Dallas Pedestrian Network - Wikipedia
The Dallas Pedestrian Network or Dallas Pedway is a system of grade-separated walkways covering thirty-six city blocks of downtown Dallas, Texas, United States. The system connects buildings, garages and parks through underground tunnels and above-ground skybridges.
Underground Tunnel Entrances, Inner Worlds, Hollow Earth ...
Underground Tunnels of the World. Mary Sutherland is an author and researcher focusing her work on consciousness studies, ancient history and unusual
Elon Musk unveils video of his first underground L.A. tunnel ...
Angelenos may be able to hitch a ride through town on Elon Musk’s first underground tunnel in just a few months.
V2ROCKET.COM - Mittelwerk / DORA
Mittelbau Overview Click here to view map of the Mittelwerk. The name Mittelbau refers to a complex of factories, storage depots, facilities and prisoner camps, some underground, that were used from August, 1943 until April, 1945 to manufacture and test the V-2 rocket near Nordhausen in central Germany.
Tunnels and underground excavations | engineering ...
Tunnels and underground excavations: Tunnels and underground excavations, horizontal underground passageway produced by excavation or occasionally by nature’s action in dissolving a soluble rock, such as limestone.
Project Camelot | Underground bases and tunnels
The first section of this page was written by Phil Schneider:. Photo of United States Air Force tunnel boring machine at Little Skull Mountain, Nevada, USA, December 1982.