- Halemaumau Trail begins at the Kilauea Visitor Center in Hawaii Volcanoes National Park, descends 400 feet through rain forest, crosses the desert-like Kilauea Caldera and ends at Halemaumau Overlook. The trail is three and a half miles long, one way and rated as moderately difficult by the Park Service. The return trip may be made via Crater Rim Trail or another combination of short paths. Interesting volcanic formations along the path include: pahoehoe lava flows, steam vents, spatter ramparts and craters.
The trail continues into the Calera from the Halemaumau Overlook.
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