Image: Hoover Dam Penstock Header

Size of this JPG preview of this TIF file: 342 × 598 pixels. Other resolution: 137 × 240 pixels.
Original image (2,049 × 3,585 pixels, file size: 42.07 MB, MIME type: image/tiff)
Description: Lower Nevada Penstock Header, one of two running through the Black Canyon Walls on the Nevada Side of Hoover Dam
Author: Jeffrey G. Katz
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC-BY-SA-3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0/
Attribution Required?: Yes
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