By the path it is half a mile from the Volcano House to the lookout- house. After a hearty supper we waited until it was thoroughly dark and then started to the crater. The first glance in that direction revealed a scene of wild beauty. There was a heavy fog over the crater and it was splendidly illuminated by the glare from the fires below. The illumination was two miles wide and a mile high, perhaps; and if you ever, on a dark night and at a distance beheld the light from thirty or forty blocks of distant buildings all on fire at once, reflected strongly against over-hanging clouds, you can form a fair idea of what this looked like.
A colossal column of cloud towered to a great height in the air immediately above the crater, and the outer swell of every one of its vast folds was dyed with a rich crimson luster, which was subdued to a pale rose tint in the depressions between. It glowed like a muffled torch and stretched upward to a dizzy height toward the zenith. I thought it just possible that its like had not been seen since the children of Israel wandered on their long march through the desert so many centuries ago over a path illuminated by the mysterious "pillar of fire." And I was sure that I now had a vivid conception of what the majestic "pillar of fire" was like, which almost amounted to a revelation.
Arrived at the little thatched lookout house, we rested our elbows on the railing in front and looked abroad over the wide crater and down over the sheer precipice at the seething fires beneath us. The view was a startling improvement on my daylight experience. I turned to see the effect on the balance of the company and found the reddest-faced set of men I almost ever saw. In the strong light every countenance glowed like red-hot iron, every shoulder was suffused with crimson and shaded rearward into dingy, shapeless obscurity! The place below looked like the infernal regions and these men like half-cooled devils just come up on a furlough.
I turned my eyes upon the volcano again. The "cellar" was tolerably well lighted up. For a mile and a half in front of us and half a mile on either side, the floor of the abyss was magnificently illuminated; beyond these limits the mists hung down their gauzy curtains and cast a deceptive gloom over all that made the twinkling fires in the remote corners of the crater seem countless leagues removed—made them seem like the camp-fires of a great army far away. Here was room for the imagination to work! You could imagine those lights the width of a continent away—and that hidden under the intervening darkness were hills, and winding rivers, and weary wastes of plain and desert—and even then the tremendous vista stretched on, and on, and on!—to the fires and far beyond! You could not compass it—it was the idea of eternity made tangible—and the longest end of it made visible to the naked eye!
The greater part of the vast floor of the desert under us was as black as ink, and apparently smooth and level; but over a mile square of it was ringed and streaked and striped with a thousand branching streams of liquid and gorgeously brilliant fire! It looked like a colossal railroad map of the State of Massachusetts done in chain lightning on a midnight sky. Imagine it—imagine a coal-black sky shivered into a tangled net- work of angry fire!
Here and there were gleaming holes a hundred feet in diameter, broken in the dark crust, and in them the melted lava—the color a dazzling white just tinged with yellow—was boiling and surging furiously; and from these holes branched numberless bright torrents in many directions, like the spokes of a wheel, and kept a tolerably straight course for a while and then swept round in huge rainbow curves, or made a long succession of sharp worm-fence angles, which looked precisely like the fiercest jagged lightning. These streams met other streams, and they mingled with and crossed and recrossed each other in every conceivable direction, like skate tracks on a popular skating ground. Sometimes streams twenty or thirty feet wide flowed from the holes to some distance without dividing—and through the opera-glasses we could see that they ran down small, steep hills and were genuine cataracts of fire, white at their source, but soon cooling and turning to the richest red, grained with alternate lines of black and gold. Every now and then masses of the dark crust broke away and floated slowly down these streams like rafts down a river. Occasionally the molten lava flowing under the superincumbent crust broke through—split a dazzling streak, from five hundred to a thousand feet long, like a sudden flash of lightning, and then acre after acre of the cold lava parted into fragments, turned up edgewise like cakes of ice when a great river breaks up, plunged downward and were swallowed in the crimson cauldron. Then the wide expanse of the "thaw" maintained a ruddy glow for a while, but shortly cooled and became black and level again. During a "thaw," every dismembered cake was marked by a glittering white border which was superbly shaded inward by aurora borealis rays, which were a flaming yellow where they joined the white border, and from thence toward their points tapered into glowing crimson, then into a rich, pale carmine, and finally into a faint blush that held its own a moment and then dimmed and turned black. Some of the streams preferred to mingle together in a tangle of fantastic circles, and then they looked something like the confusion of ropes one sees on a ship's deck when she has just taken in sail and dropped anchor—provided one can imagine those ropes on fire.