(Williams, OR) -- Authorities are confirming the identity of a missing Montana man found dead in Oregon nearly five decades ago. Oregon State Police announced Friday they have positively confirmed the identity of the remains as Mark Smith, who was 19-years-old when he disappeared in 1974. Smith left his home in Billings to travel and never returned. His skeletal remains were discovered 48 years ago by a logging crew south of Grants Pass, Oregon, but were unable to be identified until this year, when DNA was sent to a lab that tracks family trees. There's no evidence of foul play. The investigation into his death remains open.