La Portada Natural Monument is located in Region II, 25 km north of the city of Antofagasta. It is called Portada because of the result of the erosive action of the sea on the coast, which has also led to the presence of steep cliffs. On the bare rock, the saltpeter, transported by the wind, has been deposited on the strata of sandstone.
How to get to the Front page of Antofagasta:
The access road is the Route 1 road between Antofagasta and Tocopilla, approximately at kilometer 20 of this route is the detour to the monument and are 2 kilometers to reach the upper terrace. The approximate travel time is 20 minutes from Antofagasta.
On the upper level of the sector, the CONAF nursery is located, whose park ranger staff provides detailed information about the unit. It is also possible to obtain information about the unit in the Regional Office of the National Forestry Corporation, located at Avenida Argentina 2510 in the city of Antofagasta, Telephone (055) 251364. Fax (055) 253669.