Cal Orck'o

It is located in a quarry approximately 4.4 km northwest of Sucre (Chuquisaca Department, Bolivia) in the Altiplano/Cordillera Oriental, within the El Molino Formation (Middle Maastrichtian).

Cal Orck’o is situated within the El Molino Formation, dating to the Middle Maastrichtian stage of the Late Cretaceous period, approximately 68 million years ago.

Detailed mapping from 1998 to 2015 documented over 12,000 individual tracks across 465 trackways, confirming its status as the world’s largest dinosaur tracksite.

[2] Cal Orck'o hosts a diverse array of dinosaur tracks, representing at least nine distinct morphotypes: Notably, the presence of parallel trackways of juvenile ankylosaurs offers evidence of possible social behavior, indicating that some species may have moved in groups.

Conservation efforts include limited public access via Parque Cretácico, a dedicated museum offering guided tours, educational exhibits, and close-up views of track segments.