Pat De La Harpe / View of Tugela river and Amphitheatre, Royal Natal NP, KZN, South Africa
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Gavin Hellier / Thor's Hammer and 'Hoodos' in Bryce Amphitheatre in snow in winter, Bryce Canyon NP, Utah, USA
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Gavin Hellier / Horse riding through Bryce Amphitheatre, Bryce Canyon NP, Utah, USA
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Gavin Hellier / Panoramic view of Thors hammer and hoodoos in Bryce Amphitheatre in winter, Bryce Canyon NP, Utah, USA
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Gavin Hellier / Panoramic view of hoodoos in Bryce Amphitheatre in winter, Bryce Canyon NP, Utah, USA
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Tim Fitzharris / Sandstone cliffs, Echo Amphitheatre, New Mexico
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Merryn Thomas / Amphitheatre in Valle de la Luna, near San Pedro de Atacama, Chile. Salar de Atatcama. December 2013.
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Juan Carlos Munoz / Tourists walking along the coastal route near The Amphitheatre, Giant's Causeway, UNESCO World Heritage Site, County Antrim, Northern Ireland, Europe, June 2011
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Juan Carlos Munoz / Tourists walking along the coastal route near The Amphitheatre, Giant's Causeway, UNESCO World Heritage Site, County Antrim, Northern Ireland, Europe, June 2011
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Jouan Rius / View of Amphitheatre hoodoos from Bryce Point, with snow, patterns formed by erosion in sandstone, Bryce Canyon National Park, Utah, USA December 2012
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Jouan Rius / View of Amphitheatre hoodoos from Bryce Point, with snow, patterns formed by erosion in sandstone, Bryce Canyon National Park, Utah, USA December 2012
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Jouan Rius / View of Amphitheatre hoodoos in snow, viewed from Bryce Point, patterns formed by erosion in sandstone, Bryce Canyon National Park, Utah, USA December 2012
