Under us, and stretching away before us, was a heaving sea of molten fire of seemingly limitless extent. The glare from it was so blinding that it was some time before we could bear to look upon it steadily.

It was like gazing at the sun at noon-day, except that the glare was not quite so white....Now and then the surging bosom of the lake under our noses would calm down ominously and seem to be gathering strength for an enterprise; and then all of a sudden a red dome of lava of the bulk of an ordinary dwelling would heave itself aloft like an escaping balloon, then burst asunder, and out of its heart would flit a pale-green film of vapor, and float upward and vanish in the darkness--a released soul soaring homeward from captivity with the damned, no doubt. The crashing plunge of the ruined dome into the lake again would send a world of seething billows lashing against the shores and shaking the foundations of our perch. By and by, a loosened mass of the hanging shelf we sat on tumbled into the lake, jarring the surroundings like an earthquake and delivering a suggestion that may have been intended for a hint, and may not. We did not wait to see.