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A Study of the Poompuhur "U-Shaped" Object
By Michael Smith

The Poompuhur U Shape

Ever since the expedition last year, people have kept asking me (regardless of the discoveries at Mahabalipuram) about the U shaped anomaly at Poompuhar. Almost without fail, I have said something along the lines of, "I’ll be getting the map we plotted of it soon, so I can go in to more detail then." Well finally, nearly a year on, I have that map (see image below), so I guess its about time I kept my promise and say a few more things about that phase of the expedition.

But first a brief look at the more recent history of Poompuhar itself.

History

OK... so for those of you who haven’t read Underworld or read much on the expeditions website, here are a couple of interesting notes about the anomaly. It is off the coast of, what is today a small fishing village called Poompuhar by roughly five kilometres, and is situated at a depth of (according to the records from my now departed dive computer) 23 meters, standing roughly 1 meter out of the silt ocean floor.

Poompuhar in ancient times was the port capital of the Cholas, and indeed puhar means "estuary" or "river mouth of the sea." It was also referenced quite heavily in the literature of the time. Details of the town have been found as far back as the Brahmi-inscription, written in north India in the second century B.C. During the reign of Karikala Cholan, Poompuhar became a great city and Inscriptions at Thiruvengadu talk of a grand festival of Indra later Chola’s times.

After the 6th century (AD) Kalabras, Poompuhar came under the rule of the Pallava, who built Pallavaneesswaram temple, but the city hit a decline until the rise of the Cholas in roughly 850AD when the city again retained some of its former glory.

Now, however, Poompuhar stands as a monument to time more than anything else. Its once great temples stand hollowly recreated in the concrete of modern times, whilst the ruins of the originals have been embraced by the relentless ocean and lie within a couple of hundred meters of the shore. All that remains of the once great city are a few grand buildings and some scattered fishing villiages.

Poompuhar is also one of the centers if the Tamil epic story of Silapathikaram which is a wonderful story and you should read up on it if you get chance.

The U shape

OK... you have put up with the history lesson so here are my for’s and against’s the anomaly being man-made

For

  1. The anomaly turns by a series of angles, which are very sharp and well defined (only the large ones can be seen on the map).
  2. The ‘second wall’ that you can see in two places around the anomaly following the inner wall. Even in examples of angled objects in nature I have not seen an example where there is an ‘outer layer’ like this.

Against

  1. No logical shape or purpose
  2. Structures are usually found together rarely are buildings built on their own away from anything else.
  3. Natural angles occur in nature for example the "Giant's Causeway" in Northern Ireland. the pictures below were taken last year when I visited the "Giant's Causway."

Other points

  • The ocean bottom of the area is flat and featureless, with this exception.
  • The bottom is deep silt. It is currently impossible to determine whether anything smaller lies in the direct vicinity.
  • Visibility is terrible (though not as bad as the quarry I dived in recently) making it hard to take ‘birds-eye’ shot of the structure (or should that be fish-eye?).
  • The anomaly is now a coral reef. Any examinations must take this into account and further study should not endanger the coral or the ecosystem around it (most divers are conservationist...does it show?)
  • It is not really a U shape at all. Though there are definitely regular shaped angle to it. This excerpt from my logbook (the dodgy picture I drew at the time anyway) shows how distorted your view can become in that level of visibility.
  • And for another piece of interesting log-book art here is something I drew at Mahabalipuram.

Summary

Though I know there is nothing conclusive here, it was the overwhelming opinion of both myself and the other divers who we involved first hand that the anomaly was man-made. However to date the ‘smoking gun’ piece of evidence has yet to be found which could definitively state it one way or another. The members of the NIO team with us, whose official stance is that it is a natural formation, rarely vary from the official line that it is natural but more research needs to be done. However, on the last night of the expedition (the party night) I personally managed to get a confession out of one of them, who will remain nameless, but does look something like a pirate. He said “Mike, personally I think it will turn out to be man-made, but until we have the definite proof we just can’t risk saying that!”

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