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Hellenistic Hydraulic — Najran #4675 — UNESCO World Heritage Centre

UNESCO · 2023 · UNESCO

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Why it matters: UNESCO

Added: Aug 21, 2026
Submitted by: Atlas bibliography
Author: UNESCO
Year: 2023
Publisher: UNESCO
Upvotes: 0

An atlas of Earth’s mysterious places — megaliths, pyramids, lost and sunken cities — with the evidence shown plainly: what is verified, what is contested, and what is still unknown.

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