Drainpipe schmainpipe. Ain't enough water and turd volume in most of Guatemala's sewers to displace that much dirt!
As a result of the eroded ground and the unsupported poop conduit of course it broke. So where did the displaced material go. Ya can't hide umpteen million tons of earth. As it seems to be confined to one geographic area yet I'm no geologist, I'd bet on ancient volcanic activity which has left these vent pipes that were filled with fairly light density pumice. This material has eroded in the millenia and the now unsupported soils have slumped down.
I'd suspect more will follow as the earths crust slips along continents.
What does the Obama statue honoring committee have to do with sewers and sinkholes?
O nevermind, same premise. Sewer and the synonymous Resident Zero era.
See Wyd, I tolja goofygog would respond to you.