(Wasatch County, UT)  –  A 12-year-old boy dies after being hit by a snowmobile in Wasatch County.  Investigators with Utah State Parks say the boy and his family were in the Mill Hollow Reservoir area yesterday jumping a ridge line when he was hit.  The boy was taken to Primary Children’s Hospital but doctors could not save him.  Investigators have not released the boy’s name or said if any charges could be filed as a result of the accident. Â