Castle rock after the earthquake in September..blocks as big as houses rolled downhill.
After this last one, the Keep (the buttress on the right skyline..) fell down, taking with it one of my all time favorite routes (Executioner. 19 {5.9/510a})
But that's small potatoes compared to all the hell and suffering going on in Chch right now...30% of downtown buildings are gone (at least)..