El Arbol de Piedra, Siloli Desert, Bolivia
Arbol de Piedra (Rock Tree) is named after its unique appearance, which resembles a surrealist vision of a tree. It is located in the sand dunes of the Eduardo Avaroa Andean Fauna National Reserve, Potos铆 Department of Bolivia. It is located in the sand dunes of the Eduardo Avaroa Andean Fauna National Reserve, Potos铆 Department of Bolivia. de Piedra measures about five meters tall and has been formed by wind erosion over millions of years. The base of this isolated rock formation predominantly consists of quartz, which is sensitive to erosion. The upper part of the Arbol de Piedra is more resistant to erosion resulting in it鈥檚 shape. The rock has been declared a natural monument., Photo by DAVID TAYLOR/SCIENCE PHOTO LIBRARY
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