Great Sphinx of Giza
Perring's Hole

Howard Vyse directed Perring in 1837 to drill a tunnel in the back of the Sphinx, just behind the head. The boring rods became stuck at a depth of 27 feet (8.2 m), Attempts to blast the rods free caused further damage. The hole was cleared in 1978. Among the rubble was a fragment of the Sphinx's nemes headdress.
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