In addition, a continuously operating GPS station provides around-the-clock monitoring of deformation near the volcano’s summit, USGS said. West Maui Mountains extinct About a million years ago ...

The volcanic activity that began building Haleakala started about 2 million years ago, the volcano observatory said. Maui’s other main mountain, the West Maui Mountains, is considered extinct.

On the slopes of the Haleakalā volcano in the Kīpahulu Forest Reserve, Hawaiian crows, known as ʻalalā, are flying free. The species has been extinct in the wild since 2002, and past efforts ...