Michael Cannon, 18, left his family’s home in Kahala, Honolulu, in the early hours of Christmas Day intending to hike on Tantalus. He left a note saying he would spend the day on the trails, had told his mother the night before he wanted to visit the bamboo forest, and was expected back for Christmas dinner. When he did not return his mother reported him missing.

Searchers found Michael’s 1966 Chevrolet parked at the top of Tantalus the next morning, but Michael was not there. What followed became one of Hawaii’s largest and most costly search-and-rescue efforts to that point: official and volunteer teams searched the rugged terrain, and Michael’s mother funded an extended private search that brought in Canadian search dogs and professional mountaineers from California. Two hikers reported seeing a young man matching his description that day, including one who spoke with him near the bamboo forest. Months later a t-shirt belonging to Michael was recovered; otherwise no trace of him has been found. The Honolulu Police Department lists the case as open.

Did anyone in the area that Christmas remember seeing Michael or his car on Tantalus?