As most of the rivers have rapids or falls actually at the sea coast or close to it, they are, with the exception of the Cavalla, useless for penetrating far inland, and the whole of this part of Africa from Cape Palmas north-west to the Senegal suggests a sunken land.
Cape Mesurado is about 350 ft., Cape Palmas about 200 ft.
There is a salt lake or lagoon between the Cape Palmas river and the vicinity of the Cavalla.
In 1462 de Sintra returned with another Portuguese captain, Sueiro da Costa, and penetrated as far as Cape Palmas and the Cavalla river.
During 1910 the natives in the Cape Palmas district were at open warfare with the Liberian authorities.
