People,
It's what's under a pyramid that counts.
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yes @deandddd , also like we've discussed so often on this forum - the Kola borehole was the deepest borehole ever dug and there must have been a reason for choosing the Kola peninsula for such an audacious attempt...hmm !
Regards
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Sidhartha,
Of course, below pyramids are tunnel systems. They wanted to find out something.
Cheers!