Valles Marineris greatest Canyon in our Solar System [video]
October 23, 2012
Valles Marineris greatest Canyon in our Solar System (or Mariner Valley), is 4000 km (2500 mi) long and reaches depths of up to 7 km (4 mi)! Image credit: ESA/DLR/FU Berlin (G. Neukum)
Antelope Canyon
June 17, 2011
The most visited and photographed slot canyon in the American Southwest, the Antelope Canyon is located on Navajo land near Page, Arizona.
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