Robert James Henson was 45 when he was last seen on May 25, 1990, in the Hummingbird Falls and Creek area near Rocky Mountain House, Alberta. He had ridden into the backcountry on horseback and, according to the national missing-person record, was swept down the river while riding. The official account does not say how he entered the water, whether the horse lost its footing, or whether anyone directly witnessed him being carried downstream.

Henson is described as a white male with fair complexion, blue eyes and grey hair, about 5 feet 9 inches tall and 203 pounds with a heavy build. The record does not list clothing, distinguishing marks, or what happened to the horse, and it offers no detailed chronology of search efforts or how far downstream investigators looked.

The case is recorded under national reference 2014001627 with the Rocky Mountain House RCMP handling the investigation. If anyone has information about Henson’s horseback outing near Hummingbird Falls on May 25, 1990, please contact the Rocky Mountain House RCMP or Canadian Crime Stoppers.