Salar Mar Muerto, Salt flat and beach in Antofagasta Region, Chile

Salar Mar Muerto is a salt flat in the Antofagasta Region of northern Chile, about 1,100 km north of Santiago de Chile. Luis Risopatrón placed it east of the Salar de Navidad and west of the Boquete region in his 1924 geographic dictionary of Chile. The flat lies east of the port of Antofagasta.

The salt flat appeared in geographical records during the early 20th century, documented in Luis Risopatrón's 1924 Geographic Dictionary of Chile. This early mapping established it as a noted feature of the Atacama Desert landscape.

Luis Risopatrón's 1924 Diccionario jeográfico de Chile places the salt flat east of the Salar de Navidad and west of the Boquete area, a reference point still used for orientation. The name Mar Muerto, "Dead Sea", is the local label recorded for this salt flat, distinct from the sea of the same name.

Visit during morning hours when the white surface is most visible and the light is clearest. Access is by road from Antofagasta, traveling through open desert terrain to reach the site.

Luis Risopatrón's 1924 Diccionario jeográfico de Chile places the salt flat east of the Salar de Navidad and west of the Boquete region. The Swedish reference work situates it in the Antofagasta Region, about 1,100 km north of Santiago de Chile. The coordinates given for the site, roughly 23°47′ S and 69°49′ W, put it inland from the port of Antofagasta.