story by:NICKY PHILLIPS @ smh.com.au
THE giant hole in the middle of Guatemala City that swallowed a house and a three-storey building could have been forming for thousands of years.
Sinkholes occur when groundwater percolates through layers of rock in the Earth's crust, dissolving it and forming a series of underground caves.
Malcolm Cox, a hydrogeologist at the Queensland University of Technology, said that if the caves became bigger and extended up towards the surface they could make the ground unstable and eventually collapse, swallowing the surface soil - and anything on top of it". I wonder what the negro that was still in the building when it collapsed did wrong.LLS
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