The surface of the upper slopes of Mauna Loa is almost wholly of two widely different kinds of barren lava-flows, called by the Hawaiians the pahoehoe and the aa.
The adult stage of this form is the Filaria loa found in the subcutaneous tissues of the limbs.
Mauna Loa (" Great Mountain "), on the S., is by far the largest volcano in the world; from a base measuring at sea-level about 75 m.
Of Mauna Loa, and blending with it in an intervening plateau, is Mauna Kea (" White Mountain," so named from the snow on its summit), with a much smaller base but with steeper slopes and a crowning cinder cone 13,823 ft.
Above the sea, the maximum height in the Pacific Ocean; blending with Mauna Loa on the N.N.W.