Human civilization has existed for at least 6,000 years, according to modern archeology. Even in accepting this point at its face value, the possibility of other advanced civilizations developing since the formation of the human race, some 240,000 years ago, is highly likely.
But according to secret space program insider Corey Goode, ancient humans claim to have existed deep within the Earth for far longer than that, with some of the most ancient groups citing a time period of 18 million years.
Goode clarifies his relationship to the SSP Alliance, which is far from friendly. The SSP Alliance did not want Goode to be the Sphere Being Alliance delegate, as they already had a well-suited person for the job, Lt. Col. Gonzales. There were several heated exchanges between Goode and persons in the SSP Alliance, and at one point communication slowed to a trickle.
Goode was contacted by Gonzales in regard to an unprecedented development, for the geopolitical workings of the Inner Earth. Apparently, seven previously separate groups formed an alliance, due to feeling threatened by their once former allies, the secret Earth government syndicates or Cabal. Gonzales told Goode to prepare himself to eventually meet this subterranean council, and in September 2015, Goode did descend into Inner Earth.