La Portada is a natural arch on the coast of Chile, 18 km north of Antofagasta. It is one of fifteen natural monuments included among the protected areas of Chile.
There is another similar but smaller structure in the spa town of Pucatrihue, Osorno Province.
Wikipedia https://en.wikipedia.org/wiki/La_Portada
Address Chile
Coordinates -23°30'23.851" N -70°25'37.344" E