Vernon Cody Matthews, 23, was last seen June 6, 2014, after setting out from his family’s summer cabin in Pollock Pines, California, to go for a hike. He had told his mother earlier that day about a recent break-in at the cabin where roughly $18,000 in items had been taken. Matthews left with minimal gear: a water bottle, a hunting knife, a compass, his phone, and some trail mix.

His phone was last detected near the American River, and there was no further contact after that. An experienced outdoorsman and anthropology student at UC Berkeley, he knew the area well, but extensive searches in the rugged terrain — home to wildlife such as bears and mountain lions — turned up no trace. His parents later moved to Pollock Pines to help search, and their cabin was destroyed in a wildfire in September 2014.

Authorities consider that he likely had a mishap while hiking, but the exact circumstances of his disappearance remain unknown and the case is still open. If anyone had contact with Cody around June 6, 2014, or saw him near the American River, please share what was seen or heard.