arid, windswept salt flat in southwestern Bolivia. It lies on the Altiplano, at 11,995 feet (3,656 metres) above sea level. The Uyuni Salt Flat is Bolivia's largest salt-encrusted waste area (approximately 4,085 square miles 【10,582 square km】) and is separated from the Coipasa Salt Flat, a similar but smaller feature to the north, by a range of hills. On its shores are saltworks at Salinas de Garci Mendoza on the north, Llica on the northwest, and Calcha on the south.