The Gallinas River in Liberia reaches the Atlantic between Grand Cape Mount and Cape Saint Ann; the area was infamous in the 1800s for its active participation in the slave trade under the Gallinas people.
In 1840 Richard Doherty, the Governor of Sierra Leone, discovered that Fry Norman a Black British subject and her child were being held as slaves on the islands at the mouth of the Gallinas River.
References
Gallinas River (Liberia) Wikipedia(Text) CC BY-SA