A 100ft (33 metres) deep sinkhole has formed in Guatemala City, Central America. The giant cavern, which appeared following a violent tropical storm, swallowed a three-storey building, a house and a security guard when it opened up.
The huge sinkhole has left an almost perfect circle in the city, where residents are still reeling from tropical storm Agatha that brought torrential rain and floods, and has killed 120 people since it hit on Saturday.
While Guatemala locals blame the cavernous hole on poor drainage, others regard sinkholes as a natural pheneomenon. Read on to out exactly how they're formed...
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