Russian Volcano Reawakens

An ash cloud rises from the Plosky Tolbachik volcano on December 3.

A NASA image shows the Plosky Tolbachik volcano on December 4.

Plosky Tolbachik in December

Lava continues to flow from Tolbachik on December 27.

Plosky Tolbachik erupts on October 1, 1975.