Pumice Stone
Island
Formed
 
 
An
underwater
volcano
is
 
the
source
 
of a pumice stone
island,
which has
formed
in the Pacific.
 
The
huge
mass
 
of
stone,
near to
Tonga,
 
has been
floating
through
 
the
Pacific
 
for
two weeks.
 
NASA
reports
 
that
volcanologists
in
 
the
US
believe
 
the
pumice raft
could
be
from
 
an
 
unnamed
volcano,
 
 
which
hasn't
 
had
 
a
reported
explosion
since
2001.