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Why Did Ancient Civilizations Build Cities Deep Underground?

📝 Video Description

Thousands of years ago, ancient humans carved massive underground cities—some reaching 280 feet below the surface. But why would entire civilizations choose to live so deep underground?

In this video, we explore the real reasons behind ancient subterranean living, including protection from invasions, extreme climates, natural disasters, and advanced engineering techniques far ahead of their time. From hidden tunnel networks to underground homes, these structures reveal how intelligent and adaptable early humans truly were.

What forced them underground—and could it happen again?

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