A two vehicle head-on collision was reported to park dispatch via a 911 call last Monday afternoon. The accident occurred on the Grand Loop Road between Lake Village and Grant Village, about two miles north of Pumice Point. Initial responding emergency units, primarily from Lake, Grant and Old Faithful, quickly extinguished a small fire in one vehicle and then began treatment of nine injured people. ICS was established and nine NPS ambulances and three NPS fire engines were dispatched in addition to more law enforcement and traffic control personnel. A hand line and extrication tools were also sent. A total of 22 EMS professionals (both ALS and BLS) and nine firefighters were eventually on scene. The three victims identified as most critical were taken to the Lake Clinic and then flown to Eastern Idaho Regional Medical Center in Idaho Falls. Two of three who were not in critical condition were taken by ambulances to Old Faithful Clinic, with the third transported to West Park Hospital in Cody. The remaining three victims were assessed and treated on scene and then released. One of the visitors taken to Idaho Falls subsequently succumbed to her injuries. A total of 44 NPS employees, including an additional ambulance from Grand Teton NP, responded to this accident; dispatch, maintenance, interpretation and resource management employees also assisted. The IC was Klint Powell, Lake backcountry ranger. The accident remains under investigation.