To the west of the Atacama Desert Airport (copiapo) port commune lies the "Caldera" in a coastal fishing area. It is the terminal where you can taste and enjoy oysters from a kitchen specialist in seafood.
The food here is cheap. For just 1800 Chilean pesos you can eat chicken, or fish, or a kind of typical stew. The portions are good and the setting is great. Besides being served by its own owner, the menu is really delicious.