Nature
Tracy Arm is a deep, narrow fjord in southeastern Alaska within Tongass National Forest and the Tracy Arm-Fords Terror Wilderness, a protected area established by Congress in 1990. Named for Benjamin Franklin Tracy, U.S. Secretary of the Navy from 1889 to 1893, it is one of the wilderness’s two main fjords and extends more than 30 miles to the twin Sawyer Glaciers. About a fifth of Tracy Arm and nearby Endicott Arm remains ice-covered, and floating ice is common in summer. Its wildlife-rich landscape and unusual marine conditions, which bring deepwater species close to the surface, have made it important for research. In 2025, a massive rockslide-triggered megatsunami highlighted the fjord’s dramatic instability and scientific significance.
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Hobart Bay, Alaska · United States
