An original museum located in the El Edén Mine, making it the only underground museum in the world.

It exhibits a collection donated by engineer Juan Manuel Navarro, consisting of rocks and minerals from various parts of the country and the world.

The exhibition also includes fossils of nautiluses, snails, and fish. One of the highlights is the rock known as the "Desert Rose," which comes from Chihuahua.

To visit, one must descend more than 300 meters under Cerro del Grillo and traverse a 600-meter tunnel.