The preceding article here discusses the causes of the big sinkhole that opened up on Zone 2 in Guatemala City and the probability that more such underground caverns exist. Lest there be any doubt, here's another view of the Zone 2 sinkhole and another in Zone 6 that recently occurred.
How would you like to wake up to this in your living room?
Here is another:
Agujero de la zona 6, falta de previsión municipal, 4 muertos, originally uploaded by creo.org.
Used by permission.
Underground caverns like this don't form overnight, or in a few weeks. It takes years of erosion for this to happen.