[Fred Nerks]

Mathias Döring. Using theodolites, GPS readers and ample safety equipment, the team charts the depths of the tunnel.

[beebuster2000]

amazing

[airborne]

I wonder how long before Muslims claim it is an Islamic holy site.

[LucyT]

Thanks, Fred Nerks. Interesting. Just imagine all that work without our modern tools.

In the former Roman province of Syria (located in modern day Jordan), researchers are currently studying a sensational canal system. It extends mostly underground over a distance of 106 kilometers (66 miles).