Nature 364, 569 - 570 (12 August 1993); doi:10.1038/364569a0

A natural spur at Masada

Dan Gill

Geological Survey of Israel, 30 Malkhei Yisrael St, Jerusalem 95501, Israel.

Contrary to the prevailing opinion that the Roman assault ramp at Masada in Israel was entirely man-made, geological observations reveal that it consists mostly of natural bedrock.

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