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Monoliths
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The monoliths along the North Crater Flow Trail have been interpreted in two different manners. First, they may be rafted blocks, pieces of crater walls that were ripped away by a higher silica flow. Second, they are possibly volcanic necks, cooled conduits for a now missing cone (current map). As offtrail travel is prohibited along the North Crater Flow Trail, please view the monoliths from the way-side area.
Source: National Park Service
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