Puu Ōō (often written Puu Oo, and (roughly "poo-oo oh-oh")) is a cinder/spatter cone in the eastern rift zone of the Kīlauea volcano of the Hawaiian Islands. Puu Ōō has been erupting continuously since January 3, 1983, making it the longest-lived rift-zone eruption of the last two centuries. From 1983 through 1998, lav...