What is it?

An ancient ruin?
Crop cirlces in a field?

An image of the Burning Man Festival in the US has won an online vote for one company’s best satellite image of 2012.

Satellite imaging firm DigitalGlobe invited Facebook users to choose its best image of last year.

The annual event held in the Black Rock Desert, Nevada, celebrates music, art and self-expression.

The picture was taken on August 28, 2012, by the WorldView-2 satellite and shows tents, vehicles and people gathered in the desert.

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