Ischigualasto Provincial Park , also called
Valle de la Luna ("Valley of the Moon" or "Moon Valley"), due to its otherworldly appearance, is a provincial
protected area in the north-east of
San Juan Province, north-western
Argentina, limiting to the north with the
Talampaya National Park, in
La Rioja Province. Both areas belong to the same geological formation, the
Ischigualasto Formation (sometimes
Ischigualasto-Talampaya Formation) Established on 3 November 1971, the park has an area of