Massive sinkholes

Demolition crews and Hillsborough County Fire Department watch as the house, where Jeffrey Bush was swallowed by a sinkhole, is demolished in Seffner, Florida March 3, 2013. Florida rescue workers ended their efforts on Saturday to recover the body of Jeffrey Bush, who disappeared into the sinkhole that swallowed his bedroom while he slept and demolished the suburban Tampa home due to its dangerous conditions, a rescue spokeswoman said. REUTERS/Scott Audette