- Main Crater
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Main Crater (77°32′S 167°10′E / 77.533°S 167.167°E) is the topographic feature that rises to c.3750 m and forms the primary summit crater of Mount Erebus on Ross Island. Inner Crater, q.v., which lies within Main Crater, contains an anorthoclase-phonolite lava lake.
This article incorporates public domain material from the United States Geological Survey document "Main Crater" (content from the Geographic Names Information System).
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