“But that means it must have run like so much liquid fire for miles.”
“Yes, that’s exactly what it does mean, Jack,” said Sir John; “six or seven or eight. We shall know some day, when we have explored the place.”
“And that will be like a high-road to the top,” said the doctor, “only I’m afraid it would be a rather rough one.”
“We’ll try it some day,” said Sir John.
“Rather hard for your boots, sir,” said the captain. “Look at it: like glass, and as sharp in places.”
“Why, it must be quite fresh,” said Jack.
The captain smiled and shook his head.
“But some of these pieces look quite bright,” said Jack.
“Yes; and these trees look quite green, and many of them may be a hundred or two hundred years old.”
“What has that got to do with it?” said Jack. “Oh yes, I see now: they would have been burned up. Of course.”