File:King Hezekiah's Tunnel (4824909742).jpg
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DescriptionKing Hezekiah's Tunnel (4824909742).jpg |
When the city was defending itself from the approaching Assyrian army in the 8th century bce, King Hezekiah decided to protect the water by diverting its flow deep into the city with an impressive tunnel system. This engineering feat was accomplished by digging a 1,750-foot (533 meter) tunnel into the mountain. Two teams started at the ends of the tunnel and met half the way in. The slope has a height difference of merely 30 cm from the beginning to the end. This is 700 years before the Romans built their aqueducts! It is considered one of the GREAT mysteries/achievements of engineering of all times. An ancient stone carving found near the entrance describes this incredible operation. Featured in: jer-u-salem.tumblr.com/ (Nov 6, 2011)
wondermondo.com/Palestine.htm |
Date | |
Source | King Hezekiah's Tunnel |
Author | Flavio~ from Mazkeret Batia, Israel |
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This image was originally posted to Flickr by Flavio~ at https://www.flickr.com/photos/37873897@N06/4824909742. It was reviewed on 2 September 2014 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
2 September 2014
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current | 23:20, 2 September 2014 | 1,824 × 2,406 (3.26 MB) | Geagea (talk | contribs) | Transferred from Flickr via Flickr2commons |
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot SX1 IS |
Exposure time | 1/125 sec (0.008) |
F-number | f/3.5 |
ISO speed rating | 80 |
Date and time of data generation | 12:31, 22 July 2010 |
Lens focal length | 5 mm |
Horizontal resolution | 240 dpi |
Vertical resolution | 240 dpi |
File change date and time | 10:24, 23 July 2010 |
Exif version | 2.21 |
Date and time of digitizing | 12:31, 22 July 2010 |
APEX shutter speed | 6.965784 |
APEX aperture | 3.61471 |
APEX exposure bias | 0 |
Maximum land aperture | 2.96875 APEX (f/2.8) |
Metering mode | Center weighted average |
Flash | Flash fired, compulsory flash firing, red-eye reduction mode |
Focal plane X resolution | 11,684.647302905 |
Focal plane Y resolution | 11,668.508287293 |
Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Standard |