At center is the rim of the Ka Lu'u o ka' O'o cinder cone or vent, which is at 8,326 feet elevation and the closest to the visitors center of Haleakala crater. Lava flowed from this vent about 900 years ago.
The hikers have descended about 1400 feet in altitude and now only have a "short" horizontal trail to follow to the cone itself. The descent takes about an hour. Climbing back up can take 2 hours as the trail is steep and there is less oxygen in the air at that altitude.
Third in the series of images from Haleakala Crater. See Other Worlds on Earth and Alien Encounter on Haleakala for more information on this fantastic place.
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