Eruption warning updated for massive US volcano

's Mount Spurr has experienced 66 in the last week, signaling 'an elevated level of unrest.'

The Alaska Volcano Observatory (AVO) Friday, saying that the 11,000-foot-tall volcano has a lower level of erupting than it reported earlier in the year.

In March, AVO could blow in the next few weeks, but ground deformation has slowed over the last month, and the shoreline along the crater has not lost ice as it would if magma were rising to the surface.

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