Painted dunes, pine tree, and Lassen Peak. Lassen Volcanic National Park, California, USA. http://www.terragalleria.com/parks/np-image.lavo1497.html Convergence of the Lethe river and and Knife river, Valley of Ten Thousand smokes. Katmai National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.katm0112.html Bare ash mounds and sagebrush-covered slopes. John Day Fossils Bed National Monument, Oregon, USA http://www.terragalleria.com/america/oregon/john-day/picture.usor37561.html Red Cinder flow and green vegetated ridge in Haleakala Crater. Haleakala National Park, Hawaii, USA. http://www.terragalleria.com/parks/np-image.hale49786.html Backpacker leaves the Baked mountain behind, Valley of Ten Thousand smokes. Katmai National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.katm0137.html Volcanic tower near Tuff Canyon. Big Bend National Park, Texas, USA. http://www.terragalleria.com/parks/np-image.bibe6002.html Ash formation, Valley of Ten Thousand smokes. Katmai National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.katm0120.html Painted hills. John Day Fossils Bed National Monument, Oregon, USA http://www.terragalleria.com/america/oregon/john-day/picture.usor37559.html Brightly colored cinder in Haleakala crater from Sliding sands trail. Haleakala National Park, Hawaii, USA. http://www.terragalleria.com/parks/np-image.hale20921.html Painted dunes seen from above. Lassen Volcanic National Park, California, USA. http://www.terragalleria.com/parks/np-image.lavo20613.html Low white mounds of compacted volcanic ash near Tuff Canyon. Big Bend National Park, Texas, USA. http://www.terragalleria.com/parks/np-image.bibe20790.html Backpacker hikes in sand-like ash, Valley of Ten Thousand smokes. Katmai National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.katm0068.html Close-up of animal tracks in fine ash, Valley of Ten Thousand smokes. Katmai National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.katm0114.html Painted hills with snow and fog. John Day Fossils Bed National Monument, Oregon, USA http://www.terragalleria.com/america/oregon/john-day/picture.usor11427.html Painted dunes and pine trees. Lassen Volcanic National Park, California, USA. http://www.terragalleria.com/parks/np-image.lavo2128.html Haleakala crater and clouds at sunrise. Haleakala National Park, Hawaii, USA. http://www.terragalleria.com/parks/np-image.hale20923.html Occatillo and tuff. Big Bend National Park, Texas, USA. http://www.terragalleria.com/parks/np-image.bibe1412.html Camping on the bare terrain of the Valley of Ten Thousand smokes. Katmai National Park, Alaska http://www.terragalleria.com/mountain/mountain-image.katm0069.html Colorful ash, Valley of Ten Thousand smokes. Katmai National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.katm0066.html Colorful strata and snow on claystone hills. John Day Fossils Bed National Monument, Oregon, USA http://www.terragalleria.com/america/oregon/john-day/picture.usor11430.html Pine trees growing on ash dunes. Lassen Volcanic National Park, California, USA. http://www.terragalleria.com/parks/np-image.lavo1495.html View of Haleakala crater from White Hill with multi-colored cinder. Haleakala National Park, Hawaii, USA. http://www.terragalleria.com/parks/np-image.hale20916.html Occatillo and tuff. Big Bend National Park, Texas, USA. http://www.terragalleria.com/parks/np-image.bibe1413.html Ash formation on the floor of the Valley of Ten Thousand smokes, below the green hills. Katmai National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.katm0119.html Painted hills, winter dusk. John Day Fossils Bed National Monument, Oregon, USA http://www.terragalleria.com/america/oregon/john-day/picture.usor11433.html Painted dunes and pine trees. Lassen Volcanic National Park, California, USA. http://www.terragalleria.com/parks/np-image.lavo1496.html Stream flows from verdant hills into barren valley floor. Katmai National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.katm0086.html Eroded volcanic ash hummocks. John Day Fossils Bed National Monument, Oregon, USA http://www.terragalleria.com/america/oregon/john-day/picture.usor37568.html Buttes and fog at dusk. John Day Fossils Bed National Monument, Oregon, USA http://www.terragalleria.com/america/oregon/john-day/picture.usor11435.html Lethe river gorge and volcanic peaks, Valley of Ten Thousand smokes. Katmai National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.katm21121.html Colorful hummocks and hills. John Day Fossils Bed National Monument, Oregon, USA http://www.terragalleria.com/america/oregon/john-day/picture.usor37567.html Animal tracks in ash, Valley of Ten Thousand smokes. Katmai National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.katm0065.html Colorful strata and snow on painted hills. John Day Fossils Bed National Monument, Oregon, USA http://www.terragalleria.com/america/oregon/john-day/picture.usor11429.html Gorge at the convergence of Lethe and Knife rivers, Valley of Ten Thousand smokes. Katmai National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.katm21118.html Colorful claystone hills. John Day Fossils Bed National Monument, Oregon, USA http://www.terragalleria.com/america/oregon/john-day/picture.usor37570.html Ash dune formation, Valley of Ten Thousand smokes. Katmai National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.katm0106.html Sagebrush and ash hills. John Day Fossils Bed National Monument, Oregon, USA http://www.terragalleria.com/america/oregon/john-day/picture.usor37563.html Colorful slabs in the ash-covered floor of the Valley of Ten Thousand smokes. Katmai National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.katm0084.html Painted hills in winter. John Day Fossils Bed National Monument, Oregon, USA http://www.terragalleria.com/america/oregon/john-day/picture.usor11428.html Ash plain, and mountains at sunset, Valley of Ten Thousand smokes. Katmai National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.katm21123.html Boardwalk and popcorn-texture claystones. John Day Fossils Bed National Monument, Oregon, USA http://www.terragalleria.com/america/oregon/john-day/picture.usor37564.html Gorge carved by Lethe River ash floor of Valley of Ten Thousand smokes. Katmai National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.katm21119.html Weathered volcanic ash hills. John Day Fossils Bed National Monument, Oregon, USA http://www.terragalleria.com/america/oregon/john-day/picture.usor37566.html Mt Meigeck emerging above ash plain of Valley of Ten Thousand Smokes at dusk. Katmai National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.katm21124.html Blue light on Painted hills at dusk. John Day Fossils Bed National Monument, Oregon, USA http://www.terragalleria.com/america/oregon/john-day/picture.usor11434.html Rare plants growing out of the ash of Valley of Ten Thousand smokes. Katmai National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.katm21135.html Colorful ash and Lethe River gorge, Valley of Ten Thousand smokes. Katmai National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.katm21122.html Colorful layers of rock on eroded hills. John Day Fossils Bed National Monument, Oregon, USA http://www.terragalleria.com/america/oregon/john-day/picture.usor37558.html Ash-covered floor of the Valley of Ten Thousand Smokes, evening. Katmai National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.katm21125.html Boardwalk, Painted Cove Trail. John Day Fossils Bed National Monument, Oregon, USA http://www.terragalleria.com/america/oregon/john-day/picture.usor37565.html Painted hills at dusk. John Day Fossils Bed National Monument, Oregon, USA http://www.terragalleria.com/america/oregon/john-day/picture.usor37569.html Brightly colored ash in wide plain, Valley of Ten Thousand smokes. Katmai National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.katm21126.html Sagebrush and hills. John Day Fossils Bed National Monument, Oregon, USA http://www.terragalleria.com/america/oregon/john-day/picture.usor37560.html Wildflowers growing on foothills bordering the Valley of Ten Thousand smokes. Katmai National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.katm21130.html Painted hills at dusk in winter. John Day Fossils Bed National Monument, Oregon, USA http://www.terragalleria.com/america/oregon/john-day/picture.usor11431.html Stream flows from the hills into the floor of the Valley of Ten Thousand smokes. Katmai National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.katm21131.html Weathered ash hummocks and sagebrush-covered slopes. John Day Fossils Bed National Monument, Oregon, USA http://www.terragalleria.com/america/oregon/john-day/picture.usor37562.html Colorful slab, Valley of Ten Thousand smokes. Katmai National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.katm0074.html Painted hills and fog, winter dusk. John Day Fossils Bed National Monument, Oregon, USA http://www.terragalleria.com/america/oregon/john-day/picture.usor11432.html Ash formation, Valley of Ten Thousand smokes. Katmai National Park, Alaska, USA. http://www.terragalleria.com/parks/np-image.katm0118.html