A Porterfield man is dead from a snowmobiling accident Saturday. Marinette County Sheriff Jerry Sauve says Marinette County dispatch received a call just before midnight  Saturday from a snowmobiler who had come across a snowmobile that had gone off the trail #S1 on a curve and struck a tree.  A deceased male was discovered at the scene just west of Highway 180 in the Town of Wagner. The victim was identified as 46 year old Tony Camps of the Town of Porterfield.  According to the Medical Examiner, Camps died of head and internal injuries.  Authorities say speed and alcohol appear to be factors in the crash which remains under investigation.