- Home
- Cases
- Get Involved
- Community
- Tools
- Info
-
Account
- NOT A MEMBER
Become a Member! - LOGIN
- NOT A MEMBER
- Search Cases

Mar 06, 2019
Feb 01, 2022
Toshiaki
Mashiko
68
30
66 inches
145 lbs
Asian
Male
In the vast and unforgiving wilderness of Alaska, the allure of conquering its majestic peaks draws climbers from all corners of the globe. In June of 1988, Toshiaki Mashiko, a 30-year-old man from Japan, was one such adventurer, seeking to challenge the formidable Mount Blackburn in the Wrangell-St. Elias National Park and Preserve. He was not alone in this ambitious endeavor; alongside him was fellow climber Shigeo Ogawa. Together, they navigated the treacherous terrain, their spirits high with the thrill of the ascent on the mountain's northwest face. The date of their last contact was June 16, 1988, a day that would forever mark a tragic and sudden turn in their expedition. The raw power of nature in the Alaskan backcountry can be both breathtaking and deadly, a reality the two climbers faced in the most devastating way. While on the northwest face of Mount Blackburn, a massive avalanche broke loose. Without warning, a wall of snow and ice thundered down the mountain, engulfing Toshiaki Mashiko and Shigeo Ogawa. The sheer force of the avalanche was overwhelming, sweeping the two men an estimated 3,200 feet down the icy slope. In an instant, their challenging climb turned into a desperate fight for survival against one of the mountain's most unpredictable and dangerous phenomena. Following the avalanche, a search was initiated to locate the two missing climbers, but the immense scale of the mountain and the perilous conditions hampered efforts. The remote and rugged landscape of the Wrangell St. Elias area, combined with the inherent dangers of avalanche zones, made the search incredibly challenging. The Alaska State Troopers were notified of the incident and opened an investigation into their disappearance. Despite the efforts made, the vast expanse of snow and ice held the two climbers, leaving their exact location a mystery. The case serves as a somber reminder of the inherent risks of mountaineering in such a wild and untamed environment, where a day of adventure can tragically become a story of loss. The disappearance of Toshiaki Mashiko and Shigeo Ogawa is a story of ambition and the overwhelming power of nature on one of Alaska's most formidable peaks.
Jun 16, 1988
Wrangell St. Elias
Alaska
Valdez–Cordova Census Area
No
48550
Alaska State Troopers
Anchorage
Alaska
Anchorage Borough
99507
Malia Miller
Missing Persons Clearinghouse Manager
5700 East Tudor Road, Alaska
9072695511
State
Law Enforcement
880038024
1988-06-22
Alaska State Troopers
Black
Brown
Brown
07/29/2026
Read full forum posts and contribute to this case discussion.
Unlock forum access — $3.97/month