Coll de Nargo is known in the world as the only destination place that has a dinosaur site, is the unique and promising sites of its kind in the world that have footmarks of fossilized vegetal and animal remains, dinosaur eggs, and nets. This site is the motivated creation of the Mirador Del cretaci, if translated in English it means that, as a cretaceous observation center that has a visible trace of the remains of mangrove swamps; palm trees, and the large footmarks of great variety of dinosaur eggs.

This site has a hall called the limit K-T Exhibition hall that offers the visitors a chance to view the fossil remain of the last of the largest dinosaur to walk on the Earth's surface. This enables the visitors to explore on how the world was during the end of the Cretaceous periods and the discovery of the causes of the great ecological crisis that brought the end of the reign of dinosaurs.