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Unnamed
"An unnamed submarine volcano is located 35 km NW of the Niu Aunofo lighthouse on Tongatapu Island. Tongatapu is a coral island at the southern end of an island chain paralleling the Tofua volcanic arc on the east. The volcano, whose first documented eruptions took place in 1911 and 1923, was constructed at the southern end of a submarine ridge segment of the Tofua volcanic arc extending NNE to Falcon Island. Prior to an eruption in 1999, when an ephemeral island was formed, the volcano rose nearly 1400 m to within 13 m of the sea surface."  -Smithsonian Volcano Archive
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