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The Tunnel of Efpalinos: An Amazing Representation Video
isamos.gr   21 December 2016   Greece   Europe  
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<p>There was an architect, who managed, in the 6th century BC, to construct a tunnel some 1.036 meters long, beginning from two opposite sides, which met with no deviation at all! It is the Tunnel of Efpalinos.</p><p>In the 6th century BC the architect Efpalinos ...