Katmai Caldera
Katmai Caldera is a massive volcanic depression on Alaska's Alaska Peninsula, formed by the catastrophic 1912 eruption of Novarupta and subsequent lava flows. It offers remote tundra vistas, fumaroles, and access routes for backcountry exploration. While less visited than nearby Brooks River or NPS trails, the caldera rewards those seeking solitude and raw volcanic landscape.
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Geography
| Address | Katmai Caldera, Alaska, USAKatmai Caldera |
|---|---|
| Continent | North America |
| Region | Alaska |
| Subregion | Alaska Peninsula |
| Country | United States |
| State | Alaska |
| County | Lake and Peninsula Borough |
| District | Katmai National Park and Preserve |
| City | Kodiak Island (nearby) |
| Neighborhood | Katmai Caldera |
| Postal Code | 99689 |
| Timezone | AmericaAnchorage |
| Latitude | 58.5 |
| Longitude | -155 |
| Maps |
5:13 PM LOCAL TIMEKatmai Caldera is a sprawling volcanic depression on the southern Alaska Peninsula, primarily formed by the 1912 eruption of Novarupta and the related collapse of Kantishna and Mount Trident vents. Covering roughly 780 square kilometers, the caldera features rough, windswept tundra, scattered geothermal areas, and near-vertical lava cliffs. Accessible via <mathbf>rough seasonal routes</mathbf> and capable overland travel, it sees few visitors compared to the more developed Brooks River area; overnight camping is primitive and often requires self-sufficiency. The caldera is a key site for understanding Holocene volcanism, with active fumaroles and recent lava flows. Nearby natural features include the Katmai Coast, Naknek River delta, and the Alaska Peninsula wildlife corridor — great for combining caldera exploration with fishing, bear viewing, or coastal travel.
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