A new fissure roaring like jet engines and spewing magma opened on Hawaii's Kilauea volcano on Saturday, piling lava as high as a four-story building, as the area torn by the U.S. volcano's eruption spread.

The crack in pasture land on Kilauea's east flank was the 16th recorded since the volcano, one of the world's most active, erupted eight days ago. Thousands of people have fled their homes on Hawaii's Big Island because of lava and toxic gases, and dozens of homes have been destroyed.

The new fissure opened up about a mile (1.6 km) east of the existing vent system that has devastated the island's Leilani Estates neighborhood, with a few homes on the edge of the field where the vent opened. The U.S. Geological Survey warned that more outbreaks remained likely.