

Some 2,500 years ago, a mysterious culture emerged in Nigeria. The Nok people left behind bizarre terracotta statues -- and little else. German archaeologists are now looking for more clues to explain this obscure culture.
Half a ton of pottery shards is piled on the tables in Peter Breunig's workroom on the sixth floor of the University of Frankfurt am Main. There are broken pots, other storage vessels, a clay lizard and fragments of clay faces with immense nostrils.
The chipped head of a statue depicts an African man with a moustache, a fixed glare and hair piled high up on his head. He looks gloomy, almost sinister. Just a few days ago, the ceramics traveled 8,000 kilometers (5,000 miles) by sea from Nigeria, where they were unearthed.
Breunig runs an excavation near the Nigerian highlands of Jos, where the mysterious Nok culture once blossomed. Spanning more than 80,000 square kilometers (31,000 square miles), the tropical region they lived in was larger than Ireland. Its inhabitants lived in wooden huts and ate porridge made from pearl millet. Some women subjected themselves to bloody scar ornaments scratched into their breasts with knives. And, as archaeologists imagine it, smoke hung in the air as people fired masterly terracotta creations in kilns heated to 700 degrees Celsius (1,300 degrees Fahrenheit).
The most astonishing fact about what Breunig calls a society without writing is its age. It dates from around 2,500 years ago, a time when a wave of change in belief systems washed over other continents. Nok sculptors were contemporaries of Solon, Buddha and the early Mayans.
For years, people have believed that Africa was left behind at that time -- but Breunig knows better. Around 500 B.C., the population exploded, he says. People that had been living a Stone Age-like nomadic existence suddenly settled. Breunig speaks of a cultural Big Bang.
This region near the equator is still largely unexplored, and the German Research Foundation has allocated sizable funding toward that task. If the researchers from Frankfurt deliver promising results, they will continue to receive state funding until 2020.
With the help of some locals, German researchers set up their base last spring, which consists of nine mud huts in the village of Janjala. A flag with the image of Goethe, the symbol of Breunig's university, flutters on a mast. The Germans have drilled wells, and solar panels provide electricity.
Conditions there are hard. Murky water sloshes from the pump, and the solitary lightbulb in the main bricked-lined hut is the only one within 100 kilometers (62 miles). At night, owing to the heat, the researchers have gotten used to sleeping under the night sky, as wild dogs howl in the distance.
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