Sometimes
great pieces broke off and tumbled with a crash into the burning lake,
only to be remelted and thrown up anew. I had for some time been
feeling very hot and uncomfortable, and on looking round the cause was
at once apparent. Not two inches beneath the surface, the grey lava on
which we were standing and sitting was red-hot. A stick thrust through
it caught fire, a piece of paper was immediately destroyed, and the
gentlemen found the heat from the crevices so great that they could
not approach near enough to light their pipes.
One more long last look, and then we turned our faces away from the
scene that had enthralled us for so many hours. The whole of the lava
we had crossed, in the extinct crater, was now aglow in many patches,
and in all directions flames were bursting forth, fresh lava was
flowing, and steam and smoke were issuing from the surface. It was a
toilsome journey back again, walking as we did in single file, and
obeying the strict injunctions of our head guide to follow him
closely, and to tread exactly in his footsteps. On the whole it was
easier by night than by day to distinguish the route to be taken, as
we could now see the dangers that before we could only feel; and many
were the fiery crevices we stepped over or jumped across.
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