I know what you're thinking, "this can't be real". The first time I saw the images I thought they were photoshopped, but I was wrong. The Guatamala Sinkhole  in downtown Guatemala City is about 60 feet wide and about 300 feet deep. Scientist believe that Tropical Storm Agatha played a part in the sinkhole formation. Guatemala City is built on a "pumice fill", ash and rock debris from ancient volcanic eruptions. Water saturated the ash filled soil and when it bacame too heavy it collapsed. A three-story building is said to have fallen into the hole.
And, lest you think sinkholes only form in faraway lands, check out these photo of a sinkhold in Daisetta, Tx , in Liberty County.