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Frozen Dardagna waterfalls in winter with snow, Parco Regionale del Corno alle Scale, Emilia Romagna, Italy, Europe

A ridge in the Devil's Playground of crumbling hoodoos that resemble Goblins,Petrified Forest National Park, Arizona, United States of America, North America

A ridge in the Devil's Playground of crumbling hoodoos that resemble Goblins, Petrified Forest National Park, Arizona, United States of America, North America

Panorama of a ridge in the Devil's Playground of crumbling hoodoos, Petrified Forest National Park, Arizona, United States of America, North America

Panorama of a ridge in the Devil's Playground of crumbling hoodoos, Petrified Forest National Park, Arizona, United States of America, North America

Sand Castle formations on the edge of the Red Basin in Petrified Forest National Park, Arizona, United States of America, North America

Sahalie Falls in autumn, McKenzie Bridge, Lane county, Oregon, United States of America, North America

Abiqua Falls in autumn, Scotts Mills, Marion county, Oregon, United States of America, North America

South side of Pendley Arch, Coconino National Forest just outside of Slide Rock State Park, Sedona, Arizona, United States of America, North America

View from the western slope of Steamboat Rock looking north, Coconino National Forest, Sedona, Arizona, United States of America, North America

A dry waterfall sandstone ledge on a trail to Steamboat Rock, Coconino National Forest, Sedona, Arizona, United States of America, North America

Nevada Fall waterfall in Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

The Merced River at Valley View in spring, Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Ian Brown stand up paddle surfs a whitewater wave on the Potomac River near Potomac, Maryland, United States of America, North America

Ian Brown stand up paddle surfs challenging whitewater below Great Falls of the Potomac River, border of Maryland and Virginia, United States of America, North America

Ian Brown stand up paddle surfs challenging whitewater below Great Falls of the Potomac River, border of Maryland and Virginia, United States of America, North America

Ian Brown stand up paddle surfs challenging whitewater below Great Falls of the Potomac River, border of Maryland and Virginia, United States of America, North America

Ian Brown kayaks the Maryland side of Great Falls of the Potomac River, Maryland, United States of America, North America

Ian Brown stand up paddle boards the Widewater section of C and O Canal (Chesapeake and Ohio Canal) near Potomac, Maryland, United States of America, North America

Fine white sand on Bira Beach at this resort town in the far South, 190km from Makassar, Tanjung Bira, South Sulawesi, Indonesia, Southeast Asia, Asia

Fine white sand on Bira Beach at this resort town in the far South, 190km from Makassar, Tanjung Bira, South Sulawesi, Indonesia, Southeast Asia, Asia

Balanced rock that resembles a toadstool, petrified wood scattered around the formation, Petrified Forest National Park, Arizona, United States of America, North America

Balanced rock that resembles a toadstool, petrified wood scattered around the formation, Petrified Forest National Park, Arizona, United States of America, North America

A stone garden of Toadstool rocks on the south end of Keyhole Mesa in Petrified Forest National Park, Arizona, United States of America, North America

Balanced rock that resembles a toadstool, petrified wood scattered around the formation, Petrified Forest National Park, Arizona, United States of America, North America

Keyhole Mesa, named for a keyhole shaped cave on its north side, in the First Forest of Petrified Forest National Park, Arizona, United States of America, North America

Panorama of three hoodoos shaped like kings, on the edge of the Blue Mesa in Petrified Forest National Park, Arizona, United States of America, North America

An eroded sandstone formation called a Sandcastle, below the Blue Mesa in Petrified Forest National Park, Arizona, United States of America, North America

A sheer cliff of rock jutting out from the Blue Mesa along the Billings Gap Trail in Petrified Forest National Park, Arizona, United States of America, North America

Flat top hoodoo on the edge of a cliff along the Billings Gap Trail on Blue Mesa, Petrified Forest National Park, Arizona, United States of America, North America

Aerial of Rock town of Hruba Skala with the castle in the background, Bohemian Paradise, Czech Republic, Europe

Fall color change amongst the trees and shrubs on the Rock Creek Trail in Denali National Park, Alaska, United States of America, North America

A long formation of purple Bentonite clay called the Purple Peninsula, in Petrified Forest National Park, Arizona, United States of America, North America

Fabbriche di Vallico, Ponte Colandi, 14th century pedestrian bridge, Turrite Cava stream, Garfagnana, Tuscany, Italy, Europe

Beautiful sight on The Petrified Forest Loop Trail inside Theodore Roosevelt National Park, North Dakota, United States of America, North America

Beautiful sight on The Petrified Forest Loop Trail inside Theodore Roosevelt National Park, North Dakota, United States of America, North America

Field of hoodoos in Goblin Garden in the Flat Tops of Petrified Forest National Park, Arizona, United States of America, North America

A dome shaped hill of purple bentonite with a rocky flat top in Petrified Forest National Park, Arizona, United States of America, North America

A dry waterfall made of purple bentonite in the Flat Tops of Petrified Forest National Park, Arizona, United States of America, North America

Spiked rocks of the earth pyramids in autumn, Longomoso, Renon (Ritten), Bolzano, South Tyrol, Italy, Europe

Point Imperial view from Ken Patrick Trail at Grand Canyon North Rim with Mount Hayden the pointed peak left of center, Arizona, United States of America, North America

View from the Saddle Mountain Overlook on the northeast edge of Grand Canyon North Rim and the Kaibab National Forest, Arizona, United States of America, North America

Large rock spires on the cliff of Transept Canyon along the Widforss Trail at Grand Canyon North Rim, UNESCO World Heritage Site, Arizona, United States of America, North America

Aerial of the Geissenkloesterle, UNESCO World Heritage Site, Caves and Ice Age Art in the Swabian Jura, Baden-Wurttemberg, Germany, Europe

Aerial of the Geissenkloesterle, UNESCO World Heritage Site, Caves and Ice Age Art in the Swabian Jura, Baden-Wurttemberg, Germany, Europe

Cold water flows through a brook from the Briksdal glacier inside Jostedalsbreen National Park, Stryn, Vestland, Norway, Scandinavia, Europe

The lower Yellowstone Falls in the Yellowstone River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

The upper Yellowstone Falls in the Yellowstone River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

The lower Yellowstone Falls in the Yellowstone River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

The lower Yellowstone Falls in the Yellowstone River, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Large storm approaching Blue Mesa in Petrified Forest National Park, viewed from the Red Basin Trail, near Holbrook, Arizona, United States of America, North America

Lower Aysgarth Falls on the River Ure, near Leyburn, Wensleydale, Yorkshire Dales National Park, North Yorkshire, England, United Kingdom, Europe

Middle Baker's Brook Falls, Gros Morne National Park, UNESCO World Heritage Site, Rocky Harbour, Newfoundland, Canada, North America

Mountain creek with waterfalls near Maligne Canyon, Athabasca River Basin, Jasper National Park, UNESCO World Heritage Site, Alberta, Canadian Rockies, Canada, North America

A girl sitting beside and hugging her border collie dog staring at a mountain landscape of Cusna Mountain, Emilia Romagna, Italy, Europe

Tijuca National Park, Christ the Redeemer statue (Cristo Redentor) on Corcovado Mountain, Rio de Janeiro, Brazil, South America

Autumn Colors in a beech trees wood with a waterfall flowing between rocks, long exposure, Emilia Romagna, Italy

Waterfall in autumn woodland beside Loch Ken, Galloway Forest Park, Dumfries and Galloway, Scotland, United Kingdom, Europe

Greek Orthodox Monastery of St. John the Baptist, Moni Timiou Prodromou, built on a rock in Stemnitsa, Arcadia, Peloponnese, Greece, Europe

Stone outcrops forming rock formations, Vale da Lua, Chapada dos Veadeiros National Park, UNESCO World Heritage Site, Goias, Brazil, South America

Rio das Almas with the Igreja de Nosso Senhor do Bonfim in the background, Pirenopolis, Goias, Brazil, South America

Three hoodoos in a triangular formation in Devil's Playground called the Unholy Trinity, Petrified Forest National Park, Arizona, United States of America, North America

Hoodoo formations in the Devil's Playground in Petrified Forest National Park, Arizona, United States of America, North America

A tall hoodoo called the Leviathan in Devil's Playground, Petrified Forest National Park, Arizona, United States of America, North America

A hoodoo ridge in Devil's Playground at Petrified Forest National Park, Arizona, United States of America, North America

Boulders in Devil's Playground called Gnomes of Desolation, Petrified Forest National Park, Arizona, United States of America, North America

Field of boulders in Devil's Playground within Petrified Forest National Park, Arizona, United States of America, North America

South side of Damnation Mesa on the north end of Devil's Playground in Petrified Forest National Park, Arizona, United States of America, North America

Three hoodoos in a triangular formation in Devil's Playground called the Unholy Trinity, Petrified Forest National Park, Arizona, United States of America, North America

A ridge of hoodoos that resemble dog heads in Devil's Playground at Petrified Forest National Park, Arizona, United States of America, North America

Towering pillars of rock in Devil's Playground at Petrified Forest National Park, Arizona, United States of America, North America

The desolate Hellscape of Devil's Playground in Petrified Forest National Park, Arizona, United States of America, North America

Waterfall on the Aitone River forming part of a series of falls at the Cascades d'Aitone, Evisa, Corse-du-Sud, Corsica, France, Mediterranean, Europe

El Capitan reflected in the River Merced at dawn, Yosemite Natiional Park, UNESCO World Heritage Site, California, United States of America, North America

Tuolumne River rushing through granite boulders in Yosemite National Park, UNESCO World Heritage Site, California, United States of America, North America

Tumbling waterfalls on a fast flowing stream through a verdant fern carpeted woodland, Dartmoor National Park, Devon, England, United Kingdom, Europe

El Capitan reflected in the River Merced, Yosemite Natiional Park, UNESCO World Heritage Site, California, United States of America, North America

A calming mountain stream flows through dense summer forest, Blue Ridge Mountains, Appalachian Mountains, North Carolina, United States of America, North America

A calming mountain stream flows through dense summer forest, Blue Ridge Mountains, Appalachian Mountains, North Carolina, United States of America, North America

A calming mountain stream flows through dense summer forest, Blue Ridge Mountains, Appalachian Mountains, North Carolina, United States of America, North America

A calming mountain stream flows through dense summer forest, Blue Ridge Mountains, Appalachian Mountains, North Carolina, United States of America, North America

Small cascade in forest, Valle Frances (Valle del Frances), Torres del Paine National Park, Patagonia, Chile, South America

Side view of a hiker on chalet in green meadows admiring the rocky massif of Sass de Putia, Passo delle Erbe, Dolomites, Puez Odle, Bolzano district, South Tyrol, Italy, Europe

Long tailed Macaque monkeys on roadside, Kabupaten Buleleng, Gobleg, Bali, Indonesia, South East Asia, Asia

Local tribal women gather near the 322 feet Hundru waterfall to feast Shiva, the Supreme being in Hindu Shaivism, and beseech health and strength for their menfolk, Ranchi, Jharkhand, India, Asia

The historic Walker Charcoal Kiln, dating from the late 1880s used to turn oak wood into charcoal for silver smelters, Prescott National Forest, just south of Prescott, Arizona, United States of America, North America