USGS map locates lava flows before an eruption

New U.S. Geological Survey (USGS) maps show areas that could be affected by Mauna Loa lava flows — information critical for response planning. Each zone identifies a segment of the volcano that could erupt lava and send flows downslope. The volcano has erupted 33 times since 1843. Typically, eruptions began in the summit caldera, with a curtain of fire (a... read more