Just saw news reports that security guards at the Corvette Museum in Bowling Green responded to a motion detector alarm in the large domed area of the museum at around 5:30am today, and when they arrived they found a massive sinkhole with eight Corvettes at the bottom! The sinkhole is reported to be about twenty feet deep, in the area of the rotating display that held eight cars. This is the part of the museum that was completed first, in about '94 as I understand. Guess they didn't bother with subsurface geotech investigations before they did their foundations......