According to Dan Gill of the Geological Survey of Israel, the workers followed and widened natural channels formed by water traversing through the rock where cracks occurred under seismic stresses or where different layers met.
सिंचाई में इस्तेमाल होनेवाला आधा पानी ज़मीन में रिस जाता है या वाष्पित हो जाता है ।