On December 23, 1989, 19-year-old Robert Kruger and 17-year-old Tina Young left Grayling, Alaska, on a snow machine bound for nearby Anvik and never arrived. Robert was described wearing a blue coat, blue ski pants and a brown Martin fur hat. A single snow machine track was found leading to open water on the Yukon River about five miles below Grayling; helmets and other personal items were recovered from the ice and water. Divers later located the submerged snow machine in roughly 30 feet of water, but Robert and Tina themselves were never found.

Local searchers and investigators concluded the disappearance was likely the result of an accident and that the river’s current probably carried the two away. What details about their route, timing, or the river conditions that day might still help explain what happened to Robert and Tina?