The Saturn Transgression: Part One.

The Saturn Transgression

I

Rayfe Tassk took one last drag from his cigar, and then flicked the smoldering butt over the alarmingly corroded safety rail of landing platform B77. He watched it drop for a few feet before it disappeared in the boiling Venusian cloud cover below. A mild twinge of vertigo assailed him and he stepped away from the edge, walking casually back to the battered metallic ellipsoid that was his home and livelyhood, the light freighter Celestial Bounty.

Cthulhu Mythos Obscurities

In the story "The Shadow out of Time" H.P. Lovecraft mentions "a general of the great-headed brown people who held South Africa in B.C. 50,000" as one the Yithian's mental abductees.
Perhaps HPL's inspiration for this was Boskop Man aka Homo Capensis, a separate species of ancient humans theorized to have a much greater brain capacity based on some big skulls found in South Africa in 1913 (the idea has since been discredited). Was HPL imagining them in his mythos as a prehistoric empire since they had a general smart enough to get mind switched with a Yithian cone creature?

Not much online about Boskop Man since it's now considered just some unusually big skulls and not a separate race of early man but here's an image and a couple of articles.

https://en.wikipedia.org/wiki/Boskop_Man

https://steemit.com/history/@getonthetrain/boskop-man-ancient-humans-with-extraordinarily-large-skulls-how-smart-were-they

Gonshu.

Beneath and behind azure Xathar rears the citadel of Ibak.
Beneath and below azure Xathar strive the e'Kos, the Glrnar, the Ulfire men.
Beneath azure Xathar their blood runs and pools, obsidian black.
Beneath azure Xathar the denizens of Gonshu doth writhe and grasp.

And all their nightmares are as dreams of paradise.