Tuesday 18 September 2012

Tattoos, mummies and the internet

Remember Oetzi the Iceman? Mummified by the cold, lactose intolerant and tattooed on Brad Pitt's arm? (Click this link if you don't: http://diggingandgigging.blogspot.co.uk/2012/05/otzis-oldest-blood.html)
Well, get this: you can get up close and personal with Oetzi over the internet. And I'm not talking about a dating website, that would be weird. The Iceman Photoscan is a website launched in 2009 which allows you to see high definition images of Oetzi - it is possible to zoom in to see details down to 1mm small on his body. If that wasn't good enough, you can also view him in UV, pinpoint his tattoos and zoom into them (preserved beautifully), and you can even see him in 3D if you own a pair of old style red-and-cyan glasses.
Here is the website: http://iceman.eurac.edu/

I have not been this excited about the internet being able to transmit such a high level of photographic detail since I found out about Google Art Project, which I subsequently used in a talk about science and art when I was at school. Something about being able to see an object in such detail without actually being there amazes me, and that you can access this kind of information resource for free is brilliant. Even better, it allows the viewer to see Oetzi without interfering with the very sensitive conditions that preserve his body.

Some may question the right to use photos of Oetzi like this, but so long as people remember to respect Oetzi he lends a huge hand in developing educational resources, and scientific methods too, whilst of course finding out more about himself.

If you want to find out more about Oetzi beyond the pictures, you can watch videos about his wax model reconstruction and interviews with the people who have been studying him here: http://www.youtube.com/user/OetziTheIceman?feature=relchannel (he's got his own channel on Youtube!)

Oetzi isn't the only mummy with tattoos, though. The 'Siberian Ice Maiden' made the news last month as she went back to the Altai Republic where she was found on the Ukok Plateau 2500m in the mountains in 1993 by Natalia Polosmak. The body has been dated to around 2500 years old and she is thought to have died aged 25. Preserved by the permafrost, they found her in a burial chamber dressed in Chinese silk and wearing a horsehair wig, alongside jewellery, a mirror, and six saddled horses amongst other things. But her tattoos are the things have have preserved the best. Thought to belong to the nomadic Pazyryk people, their tattoos are according to Dr Polosmak 'most complicated, and the most beautiful' among mummies in the archaeological record. Here's a drawing of a mummified soldier's tattoos from the same plateau:

Drawings by Elena Shumakova, Institute of Archeology and Ethnography, 
Siberian Branch of Russian Academy of Science

To quote from this wonderful little online booklet about the findings (http://www.scribd.com/doc/96350466/Tombs-of-Altai-Mountains), in Altai art there appears to be 4 main motifs; "the horned horse, the flying“beaked” deer, the crested griffin and the elk with lobed antlers." (p36)
The cool thing is that all of these images are rooted in "common steppe tradition", a purely local Altai art that only incorporated other cultural influences during the 5th and 4th centuries AD, when the nomads would have exchanged objects, and ideas, with the Chinese and Greek. But don't think it was a one-way transfer; some of the main motifs that came out of north Western China was inspired by the Altai, seen in the reversed back legs of this elk from a belt plaque which carried into China but is also seen in some of the Altai tattoos.

©Mission Archéologique Françaiseen Asie Centrale (CNRS-MAE) H.-P.Francfort.

If we compare this spread of iconic motifs to the present day, has much really changed? As populations migrated, so did their ideas. In the same sense, tattoos help to spread these ideas, as well as represent part of the person's identity with its meaning and its connotations. Think about the internet today; this is like a virtual net of migrations, when ideas can spread at the touch of a button. You go on Google images, and one will pop up from the other side of the world. So before anyone says that some modern tattoos (say, a little Hello Kitty or something) are pointless or meaningless, maybe these are the iconic motifs of the present day - well, in the world of the internet anyway. As such, why should I have been surprised that Brad Pitt had a tattoo of Oetzi on his arm? Oetzi, all over the internet, books and journals, has become an icon. And tattoo useage still has its roots in its most basic functions; self-beautification, identity and beliefs. It appears none of these factors for having one have changed over time - only the images themselves.

Thursday 13 September 2012

Kent Caverns and the story of a jawbone

I went to Kent Caverns today in Torquay with my family. We've been on holiday in Devon and I've been keen to visit the caves since I found out that they are home to the oldest archaeological remains of anatomically modern humans in Europe. Apparently that's how geeky I can be.

Photo of inside the cavern system

In 1927, a piece of human jawbone with teeth was found that dated between 44,200 - 41,500 years old.  It was identified as being Homo sapiens sapiens, anatomically modern human, and not Neanderthal despite Neanderthals existing at the same time on the European continent. But there's a little back story about dating the maxilla (upper jaw). It was dated in Oxford in 1989 as younger - 31,000 years old - but because the jawbone had traces of glue on it that held it together, they weren't sure whether they had an accurate date for the jawbone. So, a recent study by Prof. Thomas Higham (Oxford) and Chris Stringer of the Natural History Museum in 2011 has confirmed the jawbone isn't Neanderthal.  How do you do that? By creating a 3D model of the jawbone, of course, and distinguishing AMH characteristics against Neanderthal ones. It was further dated by radiocarbon dating animal bone in the immediate layers around where the jawbone was found.  Using Bayesian statistic modelling (which I find just a bit bamboozling) they narrowed the dates to 44,500 - 41,500 years old. 

The implications for modern humans at the time so far north in Europe are incredible. Firstly, it confirms that Neanderthals and anatomically modern humans co-existed in time, but secondly that spatially AMH dispersed perhaps different than we previously assumed. 

Quoting Professor Higham (you can see his profile here: http://www.arch.ox.ac.uk/TH1.html):
"We believe this piece of jawbone is the earliest direct evidence we have of modern humans in northwestern Europe, at a site at the very outermost limits of the initial dispersal of our species. It confirms the presence of modern humans at the time of the earliest Aurignacian culture, and tells us a great deal about how rapidly our species dispersed across Europe during the last Ice Age."
Which is pretty wicked in the Upper Paleolithic world.

So off we went today on a cave tour, led by the lovely Alan and his Mag-lite, who explained the history of the archaeological digs in the 19th and 20th century. Willian Pengelly led the excavations pre-1900, and his team found flint tools and animal bones, including hyena and woolly mammoth remains. Alan showed  examples of one of each tooth, or 'tuth', as Alan says. Pengelly was good in that he brought order to the archaeological excavation techniques, excavating by a set area and depth.  Unfortunately,  Pengelly destroyed a chunk of the material debris in the cave by blowing it up. Woops.

We also saw some pretty cool stalagmites, stalactites, pillars and flowstone which looked like it came straight from Alien. Alan also decided to ask me if I knew what creature Diego was in Ice Age, and then put a saber tooth next to my face and said to everyone that it suited me. Alan, you charmer. But here is evidence of Smilodontini (small Smilodons) found in the caves, as well as bears (vegetarian and carnivorous) and other species. It's just their speculation, but it may've been one of these creatures that killed the poor person whose jawbone was found.

Some of the animal species remains found at the Kent Caverns

All in all, a great geeky day out - I even bought a Cavog the Caveman pencil.

You can read more about the jawbone in this Nature article here: http://blogs.nature.com/news/2011/11/who_ere_europes_first_humans.html
And on the Kents Cavern website here: