Kirkendall-Spring / Lower Yellowstone Falls on the Yellowstone River viewed from Artist Point, Yellowstone National Park, Wyoming, USA, June 2013.
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Kirkendall-Spring / Lower Yellowstone Falls with rainbow, on the Yellowstone River viewed from Lookout Point Trail, Yellowstone National Park, Wyoming, USA, June 2013.
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Sven Zacek / Hiking trail with boardwalk and viewing platform over frozen bog pools, aerial view. Endla Nature Reserve, Jogevamaa, Central Estonia. December 2016.
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Ashley Cooper / The Perlan building in Reykjavik, Icleand. The structure was designed around 5 huge water tanks that hold geothermally heated water. This hot water is used to provide heating for nearby buildings. Se...
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Ingo Arndt / Iguazu Waterfalls and tourists on viewing platform, Iguazu Falls, Iguazu National Park, Brazil, January 2014.
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Ingo Arndt / Landscape of Iguazu Falls in mist, with tourists on viewing platform, Iguazu Falls, Iguazu National Park, Brazil, January 2014.
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Ingo Arndt / Landscape of Iguazu Falls in mist, with tourists on viewing platform, Iguazu Falls, Iguazu National Park, Brazil, January 2014.
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Enrique Lopez-Tapia / Observation tower in the rainforest, Rio Platano Biosphere Reserve and UNESCO World Heritage Site, La Mosquitia, Honduras.
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Gabriel Rojo / Viewing platform and Perito Moreno Glacier, Los Glaciares National Park, Santa Cruz, Patagonia, Argentina. February 2010.
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Kirkendall-Spring / Lookout point on top of Mount Pilchuck, Mount Pilchuck State Park, Cascade Mountains, Washington, USA, July 2014. Model released.
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Kirkendall-Spring / Lookout point on top of Mount Pilchuck, Mount Pilchuck State Park, Cascade Mountains, Washington, USA, July 2014. Model released.
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Ingo Arndt / Tourists on viewing platform, Iguacu Falls, Iguacu National Park, Brazil
