In the trilogy, , Patricia Cori mentions the inhabitants of the planet Engan as one of the four alien races whose DNA was used to create mankind. They allegedly are a black skinned race. The location of the planet Engan is not given, but the planet is described as desert-like.
(Two other races are mentioned by name: the Alt and the Arien. No name is given for the fourh, yellow-skinned race).
Note that thus far I have not come across any other author who mentions these alien civilisations. This information was channeled.
Alt ~ Arien ~ DNA ~ Earth's Galactic History ~ Extra-terrestrial civilizations ~