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Drive along Saddle Road reveals outstanding volcanic geology

Detailed Description

Two nene fly above Pu‘uhuluhulu, a forested Mauna Kea cinder cone surrounded by younger Mauna Loa lava flows (foreground), in the Humu‘ula Saddle on the Island of Hawai‘i. This cone is just one of the outstanding volcanic features that can be seen along Route 200, the Daniel K. Inouye Highway. USGS photo by J. Kauahikaua.