One of these, the Morro Velho mine, belonging to an English company, is not only the deepest gold-mine in existence (over 2000 ft.), but it has been worked since 1725, and since 1835 by its present owners.
Some good mines, like Morro Velho and the abandoned Gongo Soco, have been developed in Minas Geraes, but the great majority are small and not very productive.
Alacran is a small islet off the lofty " morro " of Arica.
In the work of improving the city, the national government assumed the expense of the commercial quays, the filling of the Sao Christovao bay, the opening of the Mangue canal and its embellishment, the opening of the Avenida Central, the extension of the sewage system and the addition of new sources to the water supply, while the city was responsible for the Avenida Beira-Mar, the opening of a new avenue from the Largo da Lapa westward to Rua Frei Caneca, the removal of the Morro do Senado, the widening of some streets crossing the Avenida Central and the opening and straightening of other streets.
Of the sea portal stand the Morro, a picturesque fort (built 1633 seq.), on a jutting point 200 ft.