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Large Arch - 89 meters long, Landscape Arch is the largest arch in the world. Under the combined action of water and high thermal amplitudes, erosion has stripped away the more brittle layers of the red sandstone, leaving intact only the most resistant parts (Arches National Park, Utah, USA). - 1972
Petroglyphs that are clearly magical in character. The colored paints were made of mineral and plant materials and were probably applied to the rock with fingers. The figures pictured here were painted in red and ochre, the "shields" in black and white. Courthouse Wash, Arches National Park (Utah).
