A series of ghostly faces that seem to have the rocks in a brief mountain range that is seen along the San Luis Potosí highway in a place called “Valley of the Ghosts”.
There is not much space to park a car, but if you do, the walk through the rocks in that place promises strange, macabre, ghostly, hollow-eyed and open mouths that seem to exclaim a lament.
The road in this area has several curves, but if you travel slowly (which is highly recommended) even from the car without stopping you can observe these faces, but more will be seen if you explore and walk among the rocks of the valley.