It is, obviously, the remnants of a landing platform for alien spacecraft.
And I’ll be willing to bet that the Nazca Lines are EXACTLY on the opposite side of the planet (give or take a few 100 degrees of latitude and longitude< LOL)
Clearly, there was a much earlier advanced civilization on Earth, and the Borg removed it from this spot.
“It is, obviously, the remnants of a landing platform for alien spacecraft.”
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Actually that’s where my great granpappy’s still blew up.