Bioshere 2 & Mount Lemmon, Tucson, AZ

March 29, 2013 -- Story Behind The Photos -- The SLIDESHOW -- Large version (links available on thumbnail pages)

Canon EOS 5D Mark II - EF16-35mm f/2.8L II USM @ 16 mm - 1/6 sec at f / 3.5 w/ ISO 1600

Copyright -- Marty Straub