A friend of mine linked this on facebook. By using CAT scan technology the British Museum has unearthed some interesting insights into life in the Sudan 1,300 years ago, including diet and dental health. I find the presence of the tattoo pretty fascinating! My mind automatically jumped to a conversation a while ago about cultural appropriation and tattoos and I would say this suggests more of a slow creep.

http://www.telegraph.co.uk/culture/museum…

The tattoo represents the symbol of the Archangel Michael, who features in both the Old and New Testaments. The symbol has previously been found in ancient churches and on stone tablets, but never before in the form of a tattoo.

"You can see her tattoo really clearly using infra red reflectography," said Dr Antoine, "The tattoo on her right inner thigh represents a monogram that spells Michael in ancient Greek.

"She is the first evidence of a tattoo from this period. This is a very rare find."

The woman was about 5ft 2in tall and was found in 2005 on an archaeological dig in a cemetery in Sudan.

The article doesn't really speculate about a function of the tattoo, i.e. whether it was decorative or perhaps ritualistic. I've been watching way too much Supernatural so I just automatically assumed it was a charm to invoke protection. Also it was high up on her inner thigh, which also made my mind go to other places, but I am a pervy perv.
Also, it just kind of looks neat.