Biggest, Deepest and Devastating Sinkholes around the ...
At over 200m deep, 80m long and 40m wide, it is expected to swallow up the only rail line that leads to and from the potash mines, where 10% of the world's potash used in fertilizer come from. Guatemala City 2007. The 2007 Guatemala City sinkhole is a 100-metre deep sinkhole which formed in Guatemala City in 2007, due to sewage pipe ruptures.