Leone to the west of Cagliari, and antimony and other metals near Lanusei, but in smaller quantities than in the Iglesias district, so that comparatively little mining has as yet been done there.
In 1462 Pedro de Cintra extended Portuguese exploration along the African coast and discovered Sierra Leone.
The Liberia-Sierra Leone boundary was determined by a frontier commission in 1903.
The Liberian coast has few lagoons compared with the adjoining littoral of Sierra Leone or that of the Ivory Coast.
Its lower course is through the territory of Sierra Leone, and it enters the sea as the Sulima.
