This is scarey.
Check it out:

A sudden lurch in a creeping landslide in the northwest Wyoming resort town of Jackson split a house in two and forced workers to abandon just-begun efforts to stabilize the hillside.

A huge crack in the ground that had opened up under the house a couple weeks ago shifted several feet downhill in less than a day, breaking off a room or two and leaving a door swinging above the precipice. Rocks and dirt tumbled down in an almost constant stream and a geologist warned much bigger chunks could fall. The ground had been moving at a rate of an inch a day.

“As it starts to get moving, it will start to get faster,” George Machan, a landslide specialist consulting for the town, said at a town meeting Friday.

Still, Machan said the ground was unlikely to liquefy and collapse suddenly like the March 22 landslide in Oso, Wash., that killed 39 people.