Hoover Dam
Majestic View of Lake Mead.
(Photo by: Mike Krawczynski)

How quickly time goes by over the distance of four inch line.
(Photo by: Mike Krawczynski)

Evidence of faults on the walls beside the Hoover Dam.
(Photo by: Mike Krawczynski)

Hole-in-the-Wall
Prof. Bowring asks students to explain how the holes were formed.
(Photo by: Folkers Rojas)
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