Tracy Arm’s Post-Tsunami Landscape

Carved over millennia by the pressure and motion of glacial ice, the valley walls cradling the Tracy Arm fjord in southeast Alaska continue to be reshaped. In summer 2025, following the rapid retreat of South Sawyer Glacier, a large landslide sent rock careening into the fjord, altering the wider landscape in a matter of minutes. The slide culminated on the morning of August 10, 2025, when at least 64 million cubic meters of rock slid downslope. …