Red Basin

According to "The Primal Ones" by John Roots (found in the Sociology section of the Schattenjäger Library) the south west of Africa "... is called the Red Basin because of the vast amount of bloodshed that's occurred there over the centuries."

This area was home to some of the fiercest and strongest tribes of primal Africa: the Fons, the Dahomeys and the Agris.

Trivia
Gabriel's research on the homeland of the Agris and the possible location of the Ritter Talisman eventually lead to the Republic of Benin, which is NOT part of south-west Africa, but of West Africa.