Two sinkholes have appeared in the Surrey village of Godstone, but how have they formed and are they dangerous?

A sinkhole in the Surrey village of Godstone has led to evacuations, disrupted water supplies and the declaration of a major ...

More commonly, sinkholes develop when highly soluble rocks like chalk or limestone dissolve after reacting with acidic rainwater. The soluble rocks form karst – a landscape associated with ...

Sinkholes that result from the removal of a soluble rock such as chalk, gypsum or limestone are called solution sinkholes. Streams or rivers that enter a sinkhole and disappear underground are ...