5. The Island Oases

Rising sharply out of the white salt desert, many "islands" dot the otherwise level terrain of Uyuni.Rising as a petrified coral reef covered in massive cactus some over 1,000 years old, Incahuasi Island is most well-known.Originally the crowns of old volcanoes, these geological formations were buried beneath the lake that came before the salt flat.These days, these are amazing ecological refuges with special plant species that have evolved to fit the difficult surroundings.The juxtaposition between the desolate salt flat and these overgrown outcrops offers vital new perspectives on the geological past of the area and the adaptation of life in hostile surroundings.