Elk Valley RCMP received a call about a smashed window on a snow grader belonging to the Elkford Snowmobile Club.
Police officials said the Club reported the incident on September 8th at about 10:45 a.m.
The front windshield was smashed on their 1986 PistenBully Groomer with a rock.
Police estimate the damage to cost about $3,800 to repair.