Mysterious large steel cylinder disrupts traffic in Japan Japanese authorities were investigating Friday how a large steel cylinder suddenly emerged from the ground during sewer construction work and rose to the height of a four-storey building in the city o...

The cylinder -- with a diameter of around 3.5 metres -- rose 13 metres into the air, but had sunk to a height of around 1.6 metres by Friday morning after workers rushed to pour water inside to help submerge it.

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