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National Natural Landmarks of American Samoa part III

July 9, 2012

III. Site:  Fogamaa Crater, Tutuila Island, American Samoa

     Description:  Fogamaa Crater, located inland from Larsen Bay, possesses a remarkable craterlike appearance as observed from a boat offshore.  It lies with a native village coconut plantation environment.  Fogamaa Crater is the more prominent of two cones in the Leone tuff on each side of Steps Point.  This Crater illustrates the very latest phase of volcanism in American Samoa.  Since the times of eruption, the Fogamaa Crater has been breached by erosion.  The 485-acre landmark site is located on the southwest coast of Tutuila Island just south of the village of Futiga.

    Significance:  Fogamaa Crater is one of the very few illustrations of the most recent episode of volcanism in American Samoa.  Volcanologists state that the composition of the tuffs and basalt flows associated with this youngest phase of volcanism contains clues to the sequence of volcanic eruptions in this portion of the South Pacific region.


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