Bioshere 2 & Mount Lemmon, Tucson, AZ

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

Canon EOS 5D Mark II - EF24-105mm f/4L IS USM @ 45 mm - 1.0 sec at f / 16 w/ ISO 50

Copyright -- Marty Straub