When Mount
Sinabung erupted
in north Sumatra,
Indonesia on
Saturday, the
pyroclastic flow
formed a group of
small
'tornadoes�
39;, twisting thei
(more)
When Mount Sinabung erupted in north Sumatra, Indonesia on Saturday, the pyroclastic flow formed a group of small 'tornadoes', twisting their way down the mountainside.
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