Speleo-archaeologists are on a mission to update a map of the ancient underground network.
via Discovery News http://news.discovery.com/tech/gear-and-gadgets/high-tech-explorers-map-romes-aqueduct-131029.htm#mkcpgn=rssnws1
via Discovery News http://news.discovery.com/tech/gear-and-gadgets/high-tech-explorers-map-romes-aqueduct-131029.htm#mkcpgn=rssnws1
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