Mexico 1966 dream of Xochimilco Mexico City Mexico City Mexico City Mexico City Mexico City Yellowstone Yellowstone Yellowstone Yellowstone Yellowstone wildflower Tetons Yellowstone Yellowstone Yellowstone Yellowstone Yellowstone Colorado - October at Badlands, early 1970's Badlands sunset Badlands the High Plains Rocky Mountain National Park - June Rocky Mountain National Park - June Rocky Mountain National Park - June Rocky Mountain National Park - June Rocky Mountain National Park - June Rocky Mountain National Park - June Rocky Mountain National Park - June columbine Rocky Mountain National Park - June marsh grasses from the confluence of the Yampa and Green Rivers from the confluence of the Yampa and Green Rivers from the confluence of the Yampa and Green Rivers from the confluence of the Yampa and Green Rivers Great Sand Dunes National Park i Great Sand Dunes National Park ii Great Sand Dunes National Park iii Great Sand Dunes National Park iv Great Sand Dunes National Park v Great Sand Dunes National Park vi open? closed?