Ischigualasto

Ischigualasto Provincial Park, also known as the Valley of the Moon, is located in the northeastern part of San Juan Province, Argentina. It is a UNESCO World Heritage site recognized for its significant paleontological discoveries. The park covers an area of approximately 60,000 hectares and is characterized by its unique geological formations and arid landscape.

The geology of Ischigualasto is dominated by sedimentary rocks from the Triassic period, approximately 230 to 201 million years ago. These rock layers have been eroded by wind and water over millions of years, creating striking formations such as mushroom-shaped rocks, smooth hills, and deep ravines. The vibrant colors of the strata, ranging from reds and purples to greens and whites, are a result of the different mineral compositions within the rock layers.

Ischigualasto is renowned for its exceptionally well-preserved fossils from the early stages of dinosaur evolution. The site has yielded some of the oldest known dinosaur fossils, providing crucial insights into the origins and development of these prehistoric creatures. Key discoveries include the remains of *Eoraptor lunensis*, one of the earliest known dinosaurs, and *Herrerasaurus ischigualastensis*, a large carnivorous theropod. The fossils found here are vital for understanding the Triassic ecosystem and the subsequent evolution of life on Earth. The park offers guided tours that highlight the geological features and paleontological significance of the area.