BALDPATE MOUNTAIN - Officials say that a man working outside fell into a trench and was pinned by a large boulder prompting a difficult rescue operation at Baldpate Mountain in Mercer County.

The rescue operation begun after authorities received a call about the trapped man around 1:30 p.m. Officials say he was freed at 5 p.m.

Officials say the boulder was 36 to 40 inches wide and weighing over 200 pounds.

Authorities took the man in a state police helicopter to Fuld Medical Center for treatment.

There has been no official word on his injuries.