The Natural Monument La Portada of Antofagasta is located in Region II at 25 km north of the city of Antofagasta. It is called home by the result of erosion by the sea on the coast, which has led also to the presence of steep and jagged cliffs. On the bare rock, salt, carried by the wind, has been deposited on the layers of sandstone.
The access road is the Route 1 road between Antofagasta and Tocopilla, approximately at kilometer 20 of this route is the turning to the monument and is 2 miles to reach the upper terrace. The approximate travel time is 20 minutes from Antofagasta.
In the upper plateau of the nursery industry is located CONAF, whose staff of rangers submits detailed information about the unit. You can also request background information on the unit at the Regional Office of the National Forest, located on Avenida Argentina 2510 Antofagasta, Telephone (055) 251364. Fax (055) 253669.