Natrona County Sheriff: Snowmobile Accident on Casper Mountain Requires Use of HagglundNatrona County Sheriff: Snowmobile Accident on Casper Mountain Requires Use of HagglundNatrona County Sheriff's Office Investigation Sgt. Taylor Courtney told K2 News that there was a snowmobile accident near Ponderosa Park on Casper Mountain.Nick PerkinsNick Perkins