A sports utility vehicle driving in Brooklyn collapsed into a large sinkhole after a water main break caused the street to give way early Monday, authorities said.

The driver of the SUV, who was not seriously injured, exited the car on her own and later went to a local hospital to be treated for shock, said Fire Department spokesman Brian Conlon.

Inside the 12-foot-wide hole, the vehicle, barely visible from street level, was resting on top of a gas main. Crews were waiting for the gas to be turned off before removing the SUV, said Ian Michaels, a spokesman for the Department of Environmental Protection. It was unclear if the pipe had ruptured.

The damage to Fourth Avenue in Bay Ridge was probably more extensive than was visible, Michaels said.

"It's unlikely that the only part of the roadway that was damaged was that car-shaped hole," he said, adding that water seeping from the 8-inch pipe could have been washing away dirt beneath the roadway for days.

Emergency contractors would break up the road to determine the extent of the damage, Michaels said.

Service on the R subway line was suspended along Fourth Avenue between 36th and 95th streets.