1. London

Satellite image shows surface water runoff after floods

As the floods slowly subside, in some areas to ground is so wet it can't sink in.

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Three-foot deep sinkhole appears in south London street

A sinkhole has appeared in a street in south London. The Sutton Guardian reports the hole is around three feet deep and swallowed the wheel of a car in Maldon Road in Wallington.

Sinkholes are caused when the underlying rock is washed away - more exactly by the acid picked up by rain water as it passes through rotting vegetation.

That creates cavities underground which streams can flow through - the more water that flows the quicker the erosion.

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