A Taneytown man was in serious but stable condition yesterday at Maryland Shock Trauma Center after the dump truck he was driving plunged into a ravine near Anne Arundel Medical Center's Sajak Pavilion in Annapolis.

The man, 41, suffered head, neck and back injuries when the truck he was driving during work on Medical Parkway suddenly went up a dirt construction road and down about 50 feet into the excavation site about 1 p.m., said Anne Arundel Fire Department Division Chief John M. Scholz.

It took about a dozen rescue workers a half-hour to move the man, who works for Kibler Construction Co. of Finksburg, Scholz said. He was taken by helicopter to the hospital.

The driver's name was not released pending notification of his family. The cause of the accident, which occurred as the truck was being loaded with dirt, was unknown. Maryland Occupational Safety and Health was notified of the accident.