William Bill Ewasko, 65, of Marietta, Georgia, disappeared while on a solo hike in Joshua Tree National Park on June 24, 2010. An experienced hiker who had visited the park before, he planned to return by 5:00 PM and call his girlfriend; when he did not, she reported him missing the next day. Searchers concentrated around Quail Mountain, where his rental car was found, and deployed helicopters, sniffer dogs, and volunteer teams.

Search operations recovered only minimal items, notably a red bandana, and were hampered by an unusual phone ping from Ewasko’s cell detected by a tower more than 20 miles from the search area days after he vanished; that signal produced no concrete leads. The official search was called off after 11 days, though volunteers continued looking. Little is known about what happened after he entered the park’s harsh terrain. Did anyone hiking near Quail Mountain in June 2010 see Bill Ewasko or his red bandana?