The Atlantic Monthly offers an impressive gallery of the many ways Gaea wars on the human race. These instances range greatly in scale, from holes small enough to nibble a car to those large enough to puncture a city.
This Bosnian sinkhole looks like the start of an invasion:
While this classic Guatemala sinkhole appears like something from science fiction:
And this is just the best line:
[O]n July 19, 2011... Inocenta del Rosal Hernandez, 65, awoke to a loud boom and found the earth under her bed had imploded...