LITTLETON -- A 51-year-old Townsend man was transported to the hospital with a head injury on Thursday night after falling 20 feet from the top of a hay bale stack at a farm on Great Road.

Fire Chief Scott Wodzinsky declined to release the victim's identity.

The accident happened at about 7 p.m. at Pickard Farm at 155 Great Rd., according to Wodzinsky.

The victim was a worker at the farm and fell onto the concrete floor of the barn from the top of the hay bale stack, Wodzinsky said.

He was transported to UMass Memorial Medical Center in Worcester with a head injury.