Is there a lost civilization under the Persian Gulf?

In fact, in recent years, archaeologists have turned up evidence of a wave of human settlements along the shores of the Gulf dating to about 7,500 years ago.

"Where before there had been but a handful of scattered hunting camps, suddenly, over 60 new archaeological sites appear virtually overnight," Rose said. "These settlements boast well-built, permanent stone houses, long-distance trade networks, elaborately decorated pottery, domesticated animals, and even evidence for one of the oldest boats in the world."

Rather than quickly evolving settlements, Rose thinks precursor populations did exist but have remained hidden beneath the Gulf. [History's Most Overlooked Mysteries]

"Perhaps it is no coincidence that the founding of such remarkably well developed communities along the shoreline corresponds with the flooding of the Persian Gulf basin around 8,000 years ago," Rose said. "These new colonists may have come from the heart of the Gulf, displaced by rising water levels that plunged the once fertile landscape beneath the waters of the Indian Ocean."

Ironclad case?

The most definitive evidence of these human camps in the Gulf comes from a new archaeological site called Jebel Faya 1 within the Gulf basin that was discovered four years ago. There, Hans-Peter Uerpmann of the University of Tubingen in Germany found three different Paleolithic settlements occurring from about 125,000 to 25,000 years ago. That and other archaeological sites, Rose said, indicate "that early human groups were living around the Gulf basin throughout the Late Pleistocene."

To make an ironclad case for such human occupation during the Paleolithic, or early Stone Age, of the now-submerged landmass, Rose said scientists would need to find any evidence of stone tools scattered under the Gulf. "As for the Neolithic, it would be wonderful to find some evidence for human-built structures," dated to that time period in the Gulf, Rose said.

Carter said in order to make for a solid case, "we would need to find a submerged site, and excavate it underwater. This would likely only happen as the culmination of years of survey in carefully selected areas."

Cerny said a sealed-tight case could be made with "some fossils of the anatomically modern humans some 100,000 years old found in South Arabia."

And there's a hint of mythology here, too, Rose pointed out. "Nearly every civilization living in southern Mesopotamia has told some form of the flood myth. While the names might change, the content and structure are consistent from 2,500 B.C. to the Genesis account to the Qur'anic version," Rose said.

Perhaps evidence beneath the Gulf? "If it looks like a duck, and quacks like a duck, we have at least to consider the possibility that we have a small aquatic bird of the family Anatidae on our hands," said Rose, quoting Douglas Adams.

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