Glad I didn't have to dig it

Easily one of the most impressive things I've seen on this trip is the water system at Megiddo. To avoid the hassle of trying to get water into the city during a siege, the people of Megiddo dug a huge hole within their city walls down to bedrock (shown in picture) and then continued to dig just as deep into the bedrock and then continued to dig a tunnel equally as long through the bedrock to the spring outside the city. Fantastic idea, but like I said, glad it wasn't me.