Deep underground at the bottom of a potash mine in the north of
A kilometre below the earth's surface, down dim and dusty corridors, the scientists are engaged in "Zeppelin 3", an international collaboration to find what the dark matter of our galaxy is made from.
Contrasting the potash mine with the glamour of the more famous CERN quest for dark matter, at one point the reporter says: "I must say this place looks more like a builder's yard than a scientific experiment. It's got buckets of open stuff ... it's not a science lab as I'd imagine it." (Click here to see photos on Flickr.)
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