Underground Knowledge — A discussion group Discussions Mentioning Unexplained Mysteries: Ancient Aliens Or Lost Technology?: The Missing Tech Behind The World’s Greatest Structures
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| topics | posts | views | last activity | |
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| * Evidence for scientifically advanced Ancient civilizations? | 618 | 1047 | Sep 14, 2025 09:29PM |
| polls | votes | last activity | |
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| Do you believe the world today is the mo | 413 | Jul 03, 2017 06:07PM |
