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Last week the big news broke of the discovery of this aqueduct bridge that crosses Jerusalem's Hinnom Valley (Gei Hinnom).
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This photo from the 1880s shows the arches already partly covered.
(The Citadel/Tower of David and Jaffa Gate are in the background.)
Sometime in the early 20th century the area was filled and the beautiful stone bridge was totally covered and eventually forgotten.
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April 27 photograph by Assaf Peretz, courtesy of the IAA
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The Gihon waterworks company was digging, doing work on sewers, when they stumbled upon the old bridge.
The Israel Antiquities Authority stepped in and started excavating.
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Photo by Assaf Peretz, courtesy of IAA
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This is part of the Lower Aqueduct, first built in the Hasmonean period.
Miles of channels, tunnels, and aqueducts carried water to Jerusalem and to the Temple Mount from Solomon’s Pools, south of Bethlehem.
The ingenious system kept on working till the start of the 20th century.
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The bridge was built in 1320 CE (in the Mamluk period) by Sultan Nasser al-Din Muhammed Ibn Qalawun, as evidenced by the dedicatory inscription set in it (visible in the historic photo above).
However, it was apparently constructed to replace an earlier bridge dating to the time of the Second Temple period that was part of the original aqueduct.
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The
IAA website says, "The Israel Antiquities Authority, in cooperation with the Nature and Parks Authority, is working to expose the entire length of the arched bridge, conserve it and integrate it in the framework of the overall development of the Sultan’s Pool, as part of underscoring the importance of the water supply to Jerusalem in ancient times."
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So far, two of the original nine arches have been excavated to their full height of about three meters.
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UPDATE Jan. 5, 2014:
See also
http://www.israeldailypicture.com/2014/01/funny-it-doesnt-look-like-mountain-or.html
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