Cañadón Asfalto Formation

The Cañadón Asfalto Formation is a layered sequence of sedimentary rocks located in northwestern Patagonia that contains multiple types of stone material. These layers include sandstone, limestone, shale, and volcanic deposits arranged in sections that geologists study to understand ancient environments.

This rock sequence formed during a time when a massive ancient supercontinent was breaking apart into separate landmasses. The period roughly 171 million years ago marked major shifts in the Earth's structure and the arrangement of continents.

This formation draws the attention of researchers worldwide who study how plant life changed during an ancient era. Visitors can observe rocks that tell the story of life's transformation across millions of years.

The site sits in a remote region, so visitors should expect uneven ground and wear sturdy footwear for walking across the rocky terrain. The best time to visit is during drier months when access to the area is easier and more comfortable.

This rock formation holds an exceptional collection of ancient remains from a time when plant species on Earth underwent dramatic transformation. Embedded within are traces of prehistoric lakes and dinosaurs that together reveal snapshots of a world that no longer exists.

Location: Chubut

GPS coordinates: -43.40000,-69.20000

Latest update: December 10, 2025 20:05