Eberhard Prange, 32, and his new wife Sibylle disappeared after traveling to the Grand Canyon in spring 1991. The couple arrived from Germany on April 15, 1991, married in Las Vegas on April 25, and were last known to be in Grand Canyon Village around May 2, 1991. On May 4 they wired money back to Germany from a bank in the Grand Canyon area—one of the last documented actions before they vanished.

A letter Eberhard wrote to his parents is a central and disturbing detail: he said they intended to go into the canyon on a trail and not leave. Specifics about which trail they planned to use, what supplies they carried, and other logistics are not known. The Coconino County Sheriff’s Office opened an investigation on September 17, 1991, after family in Germany likely reported them missing. No confirmed sightings or evidence have emerged to explain what happened after that letter.

Does anyone have information about the couple’s plans in early May 1991, trail details, or recollections from Grand Canyon Village around May 2–4?