Caves and tunnels have always been part of human life. We've grown more adept at shaping these underground shelters and passages over the millennia, and today we dig for hundreds of reasons. We excavate to find both literal and cultural treasures, digging mines and unearthing archaeological discoveries.
We use caverns for stable storage, for entertainment, and for an effective shelter from natural and man-made disasters. And as the planet's surface becomes ever more crowded, and national borders are closed, tunnels provide pathways for our vehicles and for smugglers of every kind.
We use caverns for stable storage, for entertainment, and for an effective shelter from natural and man-made disasters. And as the planet's surface becomes ever more crowded, and national borders are closed, tunnels provide pathways for our vehicles and for smugglers of every kind.
Collected below are some recent subterranean scenes from around the world.
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| Tourists visit the Kuha Karuhas pavilion located inside the Phraya Nakhon cave, in the Khao Sam Roi Yot national park, some 300 km south of Bangkok, Thailand, on December 5, 2010. The pavillon was built in 1890 on the occasion of a visit to the cave by King Chulalongkorn, the grand-father of current King Bhumibol Adulyadej. (Christophe Archambault/AFP/Getty Images) |
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| A visitor stands in the Erstfeld-Amsteg section of the NEAT Gotthard Base Tunnel October 5, 2010. With a length of 57 km (35 miles) crossing the Alps, the world's longest train tunnel should become operational at the end of 2017. (Reuters/Arnd Wiegmann) |
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