Jonathan Hemer, 26, disappeared during a cross-country trip in September 2016 after splitting up with a companion in Seligman, Arizona. The plan was for the companion to ride a motorcycle ahead while Jonathan followed in a truck and meet at a 76 gas station in Kingman, but Jonathan never arrived.

The next morning, September 16, the truck was found abandoned and unlocked on the side of Highway 93 at the 10.5-mile marker south of the Hoover Dam. It was reportedly out of gas and contained all of Jonathan’s belongings except his wallet and the truck’s keys. Aerial and ground searches of the surrounding desert produced no sign of him.

Jonathan is described as a Caucasian man with short or shaved brown hair, blue eyes, and a distinctive tattoo on the back of his head: a red sun with a cobra’s head above it and the tail extending below his hairline. He wears contact lenses and may not have had backup glasses; he was likely wearing jeans and Red Wing-style boots when he vanished.

Does anyone who was traveling Highway 93 or the Kingman–Seligman area in mid-September 2016 remember seeing Jonathan or his truck, or have tips that could help the ongoing investigation?