“There are a good many things I would dare to do, but I shouldn’t like to jump into that,” said Tom, as he watched the mighty volume of lava in a furious state of ebullition, forming fiery waves which ran ceaselessly across the lake towards a wide abyss to the southward. Sometimes the whole seemed rising, and suddenly, at the distance of scarcely three hundred yards, a vast column spouted up to the height of sixty or seventy feet, almost as quickly subsiding; and the next instant another rose still nearer to them, which made even Jack spring back, for so near did it appear that he could not help fancying that it might fall upon them.
After watching this wonderful phenomenon for some time, the rest of the party were very glad when Terence proposed that they should climb up from whence they came; an operation which took them the best part of an hour. The early part of the night was spent before they could manage to go to sleep, and even then few of them could get the terrific scene they had witnessed out their heads. They had not been long asleep when all hands were aroused by a report like thunder, which came up from the vast lake boiling beneath them. Everybody started up; Billy Blueblazes, seizing hold of Desmond, alongside whom he was sleeping, exclaimed—
“Is the volcano going to burst out and smother us? Won’t it be better to run for it?”
“Arrah, sure it will be running faster than we can,” answered Desmond, who wasn’t quite comfortable, though he didn’t wish to show it.
On looking over the cliff, however, the lake was seen boiling away as before, sending up here and there spouts of fire, which at the distance they were below them looked like flashes from firearms at night, though probably fifty or sixty feet in height. No one, however, felt inclined to turn in again for some time, in spite of the cool air which circled round them. As they looked over the crater, the shadows from its mighty walls were cast upwards, reaching, it seemed, to the sky, and giving it the appearance of being clothed in a dark cloud.
“It is very fine,” cried Terence at length; “but if we wish to enjoy our ramble to-morrow, we shall be wise to get a little more sleep.”
His advice was followed. After breakfast next morning several of the party started off to walk round the crater, while the more adventurous ones, including the two commanders, Tom, and Desmond, with a couple of Kanaka guides, again descended another part of the cliff to the ledge. On looking at the spot where they had stood on the previous evening, a thrilling sensation came over them as they observed that it had disappeared in the burning lava below—the cause undoubtedly of the noise which had startled them during the night. Still they were anxious to get close down to the boiling lava, and obtain some of it in a state of fusion. Their guide confessed that many had gone and come back safe, but that he considered it an expedition of no slight danger. Probably at that moment neither Jack nor Terence were thinking of their wives at home.
They had gone some way, when suddenly the whole mass surged upwards, and the lava on which they were walking began to crack, while terrific reports were heard.
“Back! back!” cried the guide. They needed no second warning, but, keeping apart, made for the upper ledge. All had gamed it, except Tom, who, being at a distance from the rest, made for a part which when he got up to it he found inaccessible. Close behind him at that moment the crust was rent asunder by a terrific heave, and a vast jet of molten lava, with a fearful noise, rose high into the air. Almost roasted by the heat, he cried out for help; in another moment it would have been too late, when the guide, hearing his voice amid the uproar, leant over, and, just able to grasp his arm, though his own face was burnt in the attempt, jerked him up with a strength few of Tom’s companions could have exerted, and placed him in comparative safety. Not a moment was to be lost, for the seething mass was fast gaining on them. Up the cliffs they climbed till they gained a place of safety.
“We’ve had enough of the inside of the crater,” said Jack, as he thought how nearly Tom had been lost; and they made their way again to the upper rim of the vast basin. The larger lake, they calculated, was 1190 yards long and about 700 wide; the smaller nearly circular, and upwards of 300 yards across. The lava continued rising till it overflowed a large portion of the hitherto black surface, in some places appearing like a vast sheet of liquid fire, in others running along in serpentine courses. As their time was short, as soon as the party who had gone round the crater arrived, the tents were packed up, and they commenced their descent by the way they had come.