The view on the San Marcos plateau is overwhelming because of the imposing travertine blocks still exposed in the place. The travertine of the place comes from the mine of the site. The mine was closed and the place was transformed into Las Minas de Mármol de Cuatro Ciénegas.
The massive slabs of marble, much of it encrusted with fossils of fish and other marine life that swam in this valley when it was an ocean, greet you at this one-time mine.
Beyond the spectacular rocks, this site has impressive vistas of the Cuatrociénegas Reserve with views of the cerulean pools and rivers, starkly white dunes, and mountain ranges all around.