Attiko Metro
Construction began in 1996 to decrease traffic congestion and clean up the enviromnent by reducing Athens' smog level.
Unfortunately in 1997, The line which became the stations between Syntagma and Panepistemiou, 24 m deep, there was a big hole 5 m wide. This had affected the subway construction fearing the Panepistemiou (University) Avenue and the tunnel would collapse. Construction wento on hold. Later in the afternoon, cement trucks were filling the hole with concrete so the ground could become more stable and not to collapse which would result in monthly closure of the avenue and the subway project. After the hole was entirely filled, construction was back in progress.
History
See also
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