Fresh scans of the Pyramid of Menkaure on the Giza Plateau have revealed hidden internal voids that may line up with an unknown passageway, raising the possibility that a long-concealed entrance is ...
For the first time in nearly 2,000 years, visitors to Rome's Colosseum can now walk through a passageway once hidden and reserved for emperors. NPR's Ruth Sherlock takes us there. UNIDENTIFIED ...
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