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The abandoned megalopolis, which features vast subterranean highways, paths and gardens, was found buried beneath the earth in Brazil. It is thought to have housed one of the biggest ant colonies in the world. But no one is sure when the leafcutter species left and what caused their demise.
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Each insect would have repeatedly carried loads of earth, weighing more times more than the worker, a distance of what would be just over half a mile in human terms. Read more: www.dailymail.co.uk...
Experts poured ten tonnes of concrete into holes on the surface – which served as air conditioning ducts for the ants – to expose the tunnels by solidifying in the space. It took ten days to pour the material down the labyrinth of channels, which covered an area of 500sq ft and extended to 26ft below the surface..