The massive circular structure appears to be an archaeologists dream: a recently discovered antiquity that could reveal secrets of ancient life in the Middle East and is just waiting to be excavated. It's thousands of years old -- a conical, manmade behemoth weighing hundreds of tons, practically begging to be explored. The problem is -- it's at the bottom of the biblical Sea of Galilee. For now, at least, Israeli researchers are left stranded on dry land, wondering what finds lurk below. The...