Volcanic Landforms of Hawaii Volcanoes National Park Spatter Cone Photograph by T.T. English, U.S. Geological Survey, April 30, 1982.
Spatter is globs of lava thrown through the air.
These spatter cones can be visited by walking beyond the Halemaumau Crater overlook to the intersection of Halemaumau and Byron's Ledge trails . Photograph by J.D. Griggs, U.S. Geological Survey, March 26, 1984. Pyroclastic refers to fragmented volcanic material ejected from a volcano. A vent is an opening at the Earth's surface through which volcanic material is extruded. The spatter rampart shown in this photo was the principal vent of the 1984 eruption on the northeast rift zone of Mauna Loa Volcano.