Apparently stable slopes often fail unexpectedly, leading to general consternation and many geologists standing around saying, "Didn't I tell you that would happen? I'm sure I mentioned it. If you're not going to pay attention, at least grab me a beer."
We had an incident at B's house that illustrated the tendency of unstable slopes to fail without warning. Generally, when one is cradling a kitten, the kitten stays somewhat put as long as you're practicing correct kitten cuddling technique.
|Luna asleep in a stable position.|
|Once Luna began to slide, there was no stopping the process.|
|Luna at fullest extent of slide.|
You can see the zone of deposition beginning with her ear, there. This handy diagram from California's Department of Conservation will help you make sense of the chaos.
|Diagram of a debris avalanche by Janet K. Smith.|
|Debris Avalanche at South Bluff, Discovery Park. Not quite as cute as a debris catalanche, but makes geologists who don't have to deliver bad news to homeowners squee.|