The harbour, which is the best on the north coast of South America, is formed by an indentation of the coastline shut in by two long islands lying parallel to the mainland.
The bay itself is a shallow indentation of the coast, and is fringed with high picturesque cliffs, breached in places by steepsided narrow gullies.
The American coasts are for the most part mountainous and unbroken, the chief indentation being the Gulf of California; but the general type is departed from in the extreme north and south, the southern coast of South America consisting of bays and fjords with scattered islands, while the coast of Alaska is similarly broken in the south and becomes low and swampy towards the north.
The lower jaw should be strongly protruding, the ears should be small and erect, the forehead deeply wrinkled with an indentation between the eyes, known as the "stop."
Long, the edge of the upper one was worn back into a deep indentation, probably by running water, possibly by quarrying.