Siloam tunnel

Siloam Tunnel
נִקְבַּת הַשִּׁלֹחַ (Nikbat HaShiloaḥ)
The Siloam Tunnel
Alternative nameHezekiah's Tunnel
LocationSilwan, Jerusalem
RegionEast Jerusalem
Coordinates31°46′20″N 35°14′08″E / 31.772358°N 35.235673°E / 31.772358; 35.235673
TypeWater tunnel
History
Founded8th–7th century BC
Site notes
Discovered1838
Public accessYes
A sketch of the tunnel, including the "Virgin's Well", i.e. the Gihon Spring with the nearby Warren's Shaft, and the Pool of Siloam (both upper and lower/older), by Charles Warren and Claude Reignier Conder, 1884

The newer Siloam Tunnel (Hebrew: נִקְבַּת הַשִּׁלֹחַ, Nikbat HaShiloaḥ), also known as Hezekiah's Tunnel (Hebrew: תעלת חזקיהו, Te'alát Ḥizkiyáhu), is a water tunnel that was carved within the City of David in ancient times, now located in the Palestinian neighborhood of Silwan in East Jerusalem. Its popular name is due to the most common hypothesis that it dates from the reign of Hezekiah of Judah, late 8th and early 7th century BC, and corresponds to the "conduit" mentioned in 2 Kings 20 (2 Kings 20:20) in the Hebrew Bible.[1] According to the Bible, King Hezekiah prepared Jerusalem for an impending siege by the Assyrians, by "blocking the source of the waters of the upper Gihon, and leading them straight down on the west to the City of David" (2 Chronicles 32:30). By diverting the waters of the Gihon, he prevented the enemy forces under Sennacherib from having access to water. An older water system, sometimes called the Siloam Channel, partly fulfilled a similar purpose and dates back to the Canaanites (Bronze Age).

The idea of dating the tunnel to Hezekiah's period was derived from the Biblical text that describes construction of a water tunnel in his time.[1] Scientific support for this, however, came from radiocarbon dates of organic matter contained in the original plastering as well as radiometry (uranium-thorium dating of speleothems).[2] The dates were challenged in 2011 by new excavations that suggested an earlier origin in the late 9th or early 8th century BC.[3][4]

The tunnel leads from the Gihon Spring to the Pool of Siloam.[5][6][7] If indeed built under Hezekiah, it dates to a time when Jerusalem was preparing for an impending siege by the Assyrians, led by Sennacherib. Since the Gihon Spring was already protected by a massive tower and was included in the city's defensive wall system, Jerusalem seems to have been supplied with enough water in case of siege even without this tunnel. According to Aharon Horovitz, director of the Megalim Institute, the tunnel can be interpreted as an additional aqueduct designed for keeping the entire outflow of the spring inside the walled area, which included the downstream Pool of Siloam, with the specific purpose of withholding water from any besieging forces. Both the spring itself, and the pool at the end of the tunnel, would have been used by the inhabitants as water sources. Troops positioned outside the walls wouldn't have reached any of it, because even the overflow water released from the Pool of Siloam would have fully disappeared into a karstic system located right outside the southern tip of the city walls. In contrast to that, the previous water system did release all the water not used by the city population into the Kidron Valley to the east, where besieging troops could have taken advantage of it.

The curving tunnel is 583 yards (533 m; about 1⁄3 mile) long and by using the 12 inch (30 cm) altitude difference between its two ends, which corresponds to a 0.06 percent gradient, the engineers managed to convey the water from the spring to the pool.

According to the Siloam inscription, the tunnel was carved out of the living rock by two teams, one starting at each end of the tunnel and then meeting in the middle. The inscription is partly unreadable at present, and may originally have conveyed more information than this. It is clear from the tunnel itself that several directional errors were made during its construction.[8] Recent scholarship has discredited the idea that the tunnel may have been formed by substantially widening a pre-existing natural karst.[2] How the Israelite engineers dealt with the difficult feat of making two teams digging from opposite ends meet far underground is still not fully understood, but some suggest that the two teams were directed from above by sound signals generated by hammering on the solid rock through which the tunnelers were digging.[2]

  1. ^ a b Robb Andrew Young (2012). Hezekiah in History and Tradition. Koninlijke Brill. pp. 35, 48–50. ISBN 978-9004216082.
  2. ^ a b c Frumkin, Amos; Shimron, Aryeh (2006). "Tunnel engineering in the Iron Age: Geoarchaeology of the Siloam Tunnel, Jerusalem". Journal of Archaeological Science. 33 (2): 227–237. Bibcode:2006JArSc..33..227F. doi:10.1016/j.jas.2005.07.018. Retrieved 13 May 2024.
  3. ^ Cite error: The named reference Reich was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference DeGroot was invoked but never defined (see the help page).
  5. ^ Image of exit
  6. ^ Holy Land Photos
  7. ^ Image
  8. ^ Images of some mistakes - [1] [2]