Oligocene and Miocene Strata
Pawnee Grasslands
CD1-91
Pennsylvanian Alluvial Fans
Flatirons west of Boulder
CD1-86
Oligocene Sequoia
Florissant Fossil Beds
CD1-90
Laramide Thrust Fault
Wolford Mountain
ID 1892
Golden Aspen near Mt. Hope
Sawatch Range
CD1-83
Dune Crests
Great Sand Dunes
CD1-82
Aspen - Lodgepole Pine Forest
Vail
CD1-78
Talus Blocks
Mosquito Range
CD1-89
Alpenglow on Glacial Arete
Tenmile Range
CD1-76
Glacial Cirques
Mount Quandary
CD1-88
Pennsylvanian Bioherm
Minturn Formation
CD1-92
Cliff Dwellings
Mesa Verde National Park
CD1-79
Cretaceous Strata
Mesa Verde National Park
CD1-85