The Atacama Desert, located on the west coast of South America and spanning Chile, Peru, Bolivia and Argentina, covers an area of about 180,000 square kilometers and is the oldest and driest non-polar desert on Earth. Under the influence of subtropical high pressure and the Peruvian cold front, the annual precipitation is less than 2 millimeters, and some parts of the desert do not receive rain for a hundred years. Despite the extreme aridity, the coastal fog belts form unique oases that support a small number of drought-tolerant plants and animals. Today, it is a popular destination in Chile, attracting tourists to explore the unique landscapes and starry skies.