Two Alaska men survived an airplane crash this weekend after their single-engine Piper 180 aircraft went down Friday evening. The plane crashed just inside the eastern boundary of Yellowstone National Park, and just southeast of the East Entrance road near Sylvan Pass. 61 year-old James Betzhold and his 25 year-old son Douglas from Beluga, Alaska, were en route to Boise, Idaho when the crash occurred. Yellowstone Regional Airport officials in Cody say the men had just taken off after a refueling stop about 4:00 pm when the crash occurred. The plane was reported overdue about midnight Fiday and Park County Wyoming Search and Rescue crews along with Yellowstone National Park rangers began a joint search for the aircraft at first light Saturday morning. Following the emergency locator beacon, the searchers located the wreckage just before 9:00 am and were met by the men walking out as they approached the crash site. Park Spokesman Dan Hottle says rescuers found the two occupants had sustained bruises, lacerations and possible broken bones, but otherwise OK. The cause of the crash is still undetermined.