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.

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Sinkhole opens up in Wallington as a car drives over it - here's the hole http://t.co/Z1HRXJB2JV

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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.

Read more: Martin Stew explains what causes sinkholes.

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