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Lolobau volcano, Papua New Guinea
Lolobau volcano (left center) sits astride the western rim of a 6-km-wide caldera, which formed about 12,000 years ago on the 8 x 13 km, oval-shaped Lolobau Island.
Lolobau is seen here from the south beyond the lower flanks of Ulawun volcano.
The smaller peak at the right is located along the eastern caldera rim.
Several vents within the caldera along an E-W-trending line on the eastern flank of Mount Lolobau have been active during historical time.
The latest eruptions took place during the early-20th century.
Lolobau volcano sits astride the western rim of a 6-km-wide caldera, which formed about 12,000 years ago.
The 8 x 13 km, oval-shaped Lolobau Island is located just off the coast of eastern New Britain. A small lake occupies the SW part of the caldera.
A small lava dome (Hulu) caps Mount Lolobau, which has a 0.8 x 1.1 km summit crater that is breached to the NE.
Flank cones are found along the coast of the largely submerged volcano. Several vents within the caldera along an E-W-trending line on the eastern flank of Mount Lolobau have been active during historical time.
The latest eruptions took place during the early-20th century.
PHOTO SOURCE: Photo by Robert Citron, 1970 (courtesy of William Melson, Smithsonian Institution).
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