Where does tarzan of the apes take place?

Tarzan and his parents were marooned by mutineers somewhere on the West coast of Africa. Nimmr, the City of the Sepulcher, and Alemtejo were in the mountains of Abbysinnia. Castrum Mare and Castrum Saguinarius were in the Wriramwazi Mountains. Athne, Cathne, Kaji, and Zuli were all in Ethiopia. The city of the Kavuru was in the Congo. Ashair and Thobos were in Rhodesia. Xuja was in Tanganyika. The City of Opar and the City of the Bolgoni were in Zaire (the former Belgian Congo). Chichen Itza was not in Africa, but somewhere in the South Pacific. The Midian Valley and Ur's locations are not identified. There are additional cities and locations that I don't know where they were.