Aerial photo 2 frames of the Coipasa Salt Flat, Spanish Salar de Coipasa, salt flat, in the arid but colourful Altiplano of Bolivia, about 100 miles (160 km) southwest of the city of Oruro, near the Chilean border. At an elevation of 12,073 feet (3,680 metres), the flat, Bolivia’s second largest (after Uyuni Salt Flat), occupies 856 square miles (2,218 square km). Lake Coipasa directly to the north receives the intermittently flowing Lauca River from the northwest and is connected to Poopó Lake to the east by the Lacajahuira River.