text: Radio-carbon dating on the lowest portions of the walls ( sent tumbling by the horns of Joshua in 1200 b.c. ' Joshua 6 : 20 ) indicates that there was a settlement of some 3,000 people at this spot as long ago as 7800 b.c.
  
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  Radio-carbon dating on the lowest parts of the walls indicates a settlement from 7800 b.c.