Dennis Paul Ulak was 27 when he disappeared in winter 2004 after being last seen at St. Mary’s Airport in the Bethel area on January 22. He was wearing a blue Cabela’s coat and black Carhartt pants. Two days later an official report was filed with the Alaska State Troopers and searches began in the remote area.

Investigators found snowmachine tracks believed to be his leading to the confluence of the Andreafski and Yukon Rivers. He had been riding a black Ski-Doo MXZ500 or 550 with a rear rack. Despite extensive searches, neither Dennis nor the snowmachine was recovered, and in the absence of other evidence authorities have presumed he drowned.

Anyone who knew Dennis, saw him in the Bethel area that January, or has information about travel on the Andreafski–Yukon confluence is asked to come forward.