Richard Cleave, courtesy Leon Levy Expedition

Ashkelon on the sea. An arc of earthworks one-and-a-half miles long encloses the immense 150-acre ancient city. Built over a 3,500-year span, from 2000 B.C. to 1500 A.D., the protective rampart defines the flat, semicircular mound on which the ancient city stood. Today the Yadin National Park, named after famed Israeli archaeologist Yigael Yadin, who died in 1984, lies inside the 150-acre mound.