“Salar De Uyuni” is over 1000 square kilometers large salt flat, which is known as the world’s largest salt flat. It is located near the crest of the Andes in Daniel Campos Province in southwest Bolivia, South America. Salar De Uyuni is part of the Altiplano, which is a high plateau formed during the uplift of the Andes mountain. The geological history of salary de Uyuni is associated with the sequential transformation between giant pre-historical lakes some over 30000, to 42000 years ago. The largest pre-historical lake was Minchin. The center of Salar De Uyuni has a few islands, which are the remaining parts of the tops of ancient volcanoes submerged during the Lake Minchin era. These islands consist of some unusual coral-like structures, fossils, and algae.