One by one, homes in Calif. subdivision sinking - Yahoo! News
"LAKEPORT, Calif. (AP) — Scott and Robin Spivey had a sinking feeling that something was wrong with their home when cracks began snaking across their walls in March. The cracks soon turned into gaping fractures, and within two weeks their 600-square-foot garage broke from the house and the entire property — manicured lawn and all — dropped 10 feet below the street. It wasn't long before the houses on both sides collapsed as the ground gave way in the Spivey's neighborhood in Lake County, about 100 miles north of San Francisco."
Sinking feeling, indeed. And it seems that the cause isn't clear, although the consensus seems to be that groundwater is involved. Thanks to Fred Pilot for this link.