The volcano's Pu'u 'O'o crater collapsed on Saturday, and a 0.33-mile-long (0.5-kilometer-long) fissure ripped open on a separate region of the volcano. The new vent has since been sporadically erupting lava up to 80 feet (25 meters) high, according to the Hawaii Volcano Observatory, which is run by the U.S. Geological Survey (USGS).