A crater on the ever-active Kilauea Volcano in Hawaii has started to spew a huge plume of ash. The recent explosion, which shut down roads in the area, may be a harbinger of even bigger explosions to come.
The ash plume, which is thousands of feet high, indicates an unknown geophysical change deep inside the volcano. Scientists also said small amounts of lava erupted from the crater Monday. The National Park Service has closed Crater Rim Drive through the south caldera area until further notice, and people with asthma and other breathing problems were told to avoid downwind areas.
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