Bora-Bora地形图
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Bora-Bora
The bay of Tuuraapuo was the main crater of the volcano, whose collapsed southwestern edge only subsists still in the islets Toopua and Toopua-iti, which culminate respectively at 148 m (486 ft) and 17 m (56 ft), altitude. The volcanic rocks are of basaltic type, consisting mostly of alkaline basalts, some hawaiites, and some gabbro intrusions, especially on the islet Toopua. They come mostly from voids, with explosive episodes being rare.
