Pikes Peak at sunset
Pikes Peak (14109ft-4300m) in Pike National Forest after a heavy spring snowfall, at sunset Colorado
Porphyry Basin, Colorado
Reflection of Three Needles Mountain and Porphyry Basin, San Juan Mountains of Colorado
Blue Lakes Basin in the Mt.Sneffels Wilderness
The sun dappled Sneffels Range and Blue Lakes Basin on a spring morning in the San Juan Mountains of Colorado
Ice Lake with its blue glacial-flour tinted water
Ice Lake on a sunny summer day as clouds approach in Ice Lakes Basin in the San Juan Mountains of Colorado
Upper Ice Lakes Basin, Colorado
Hikers with llamas heading to Island Lake with Ice Lake in the background in Ice Lakes Basin in the San Juan Mountains of Colorado
Island Lake in Upper Ice Lakes Basin
The emerald jewel that is Island Lake, located in an alpine bowl above Ice Lake, is unique in its beautiful mineral-based coloration
Summer storm clouds at sunset
Sunset lights up storm clouds passing over Mt. Garfield (13074ft - 3985m) which lies at the west end of the impressive Grenadier Range in the San Juan Mountains of Colorado
Light bands of pegmatite intrude through dark expanses of gneiss on the Painted Wall in Black Canyon of the Gunnison NP
The Gunnison River in Black Canyon of the Gunnison NP, Colorado
The Precambrian gneiss and schist walls of the Black Canyon of the Gunnison National Park are over 2000 feet deep and were carved out by the Gunnison River
Black Canyon of the Gunnison NP, Colorado
Pegmatite veins cross the Precambrian gneiss and schist walls of the Black Canyon of the Gunnison National Park are over 2000 feet deep.
Black Canyon of the Gunnison NP
The Gunnison River flows below the walls of the Black Canyon of the Gunnison National Park in Colorado
Sneffels Range at sunset
Dramatic sunset light highlights Cirque Mt (r) and Teakettle Mt (l) in the Sneffels Range of Colorado
Keyhole Arch in western Kansas
Keyhole Arch at Monument Rocks, which are chalk formations on the western plains of Kansas and was the first U.S. National Natural Landmark
Keyhole Arch, western Kansas
Keyhole Arch, Monument Rocks, western Kansas
Sandstone striations in White Pocket, Arizoan
Sandstone striations highlight the unique rock formations of White Pocket in the Vermilion Cliffs National Monument of Arizona
White Pocket reflection
A small pond reflects sandstone formations in the remote White Pocket area of Arizona
Petrified sand dune in the Vermilion Cliffs Wilderness
Striated petrified sand dunes in Vermilion Cliffs Wilderness in Utah
Vermilion Cliffs Wilderness
Petrified, wind-sculpted sand dunes in North Coyote Buttes, Vermilion Cliffs National Monument
Hiker on a sandstone formation in Vermilion Cliffs Wilderness
Wind-sculpted petrified sand dunes on a sunny day in North Coyote Buttes, Paria Canyon-Vermilion Cliffs Wilderness
Petrified Sandstone
Swirling lines on a petrified sand dune in North Coyote Buttes, Utah
Upsweeping sandstone lines in Vermilion Cliffs Wilderness
Sweeping lines define a petrified sand dune in the Vermilion Cliffs Wilderness
Delicate sandstone fins
Delicate sandstone fins criss-cross a small hillside in the Vermilion Cliffs Wilderness in South Coyote Buttes, Arizona
