Global Volcanism Program | Image GVP-03585
Mauna Kea is seen here from the S at the broad Humu'ulu Saddle between Mauna Kea and Mauna Loa. The lava flow in the foreground was emplaced during an 1843 eruption that originated on the NE rift zone of Mauna Loa. The flow traveled directly N to the Mauna Kea saddle, where it was deflected to the W. The irregular profile of the summit region of Mauna Kea is due to scoria cones and pyroclastic ejecta that are not present at Mauna Loa.
Photo by Paul Kimberly, 1994 (Smithsonian Institution).