Toshiaki Mashiko was 30 when he and fellow climber Shigeo Ogawa attempted Mount Blackburn in Wrangell‑St. Elias National Park and Preserve. Their last contact came June 16, 1988, while the pair were on the mountain’s northwest face.

A massive avalanche broke loose and swept both men an estimated 3,200 feet down the slope. A search followed but the mountain’s scale and hazardous conditions prevented locating them, and the Alaska State Troopers opened an investigation into the disappearance.

The account ends with both climbers unlocated and the exact circumstances and locations of their remains unknown. Does anyone have information about that 1988 expedition or contacts who might have been involved in the search?