September 30, 2013April 5, 2020 by Steven Michael Martin Great Sand Dunes in Colorado / Colorful Colorado and Arizona / National Parks / NP - Plains and Rockies SharePost tagsduneRandy FosterYou may also likeMount Rainier - Paradise MeadowsBlack Canyon of the Gunnison NPMcInnis Canyons NCA - Rattlesnake ArchesCuyahoga Valley NP