Lava Lava Pahoehoe near the coast of Kilauea. Photo by Steve Mattox, 1989. Lesson at a glance, Key Concepts, and Lesson Outcomes are available by clicking here .
Pahoehoe is the second most abundant type of lava flow.
Eruptions under water or ice produce pillow lava. This photo shows pillow lava forming off the south coast of Kilauea volcano, Hawaii. Photograph by Gordon Tribble and courtesy of U.S. Geological Survey. Photograph courtesy of U.S. Geological Survey. Lava flows near the coast tend to spread out laterally and enter the ocean over a large front.