Here
you
can
see
how
richly
the
walls
and
ceiling
of
public
baths
were
decorated.
Since
the
ceiling
is
arched,
it
survived
the
weight
of
the
ash
falling
from
the
eruption.
Behind
the
railing
is
a
pool.
(The
railing
is
to
keep
tourists
out.)