In front of them was the beginning of a long crack, which extended a couple of miles or more, and all along the edges of this the water streamed down in the form of a cascade of unlimited extent.
The sunlight came in through the crack, which was probably a quarter of a mile in width, and lighted up the place.
All sorts of vegetation flourished on the place beneath the opening above; but beyond this our friends could perceive nothing on account of the falling water and the mist arising from the streams in which it fell.
“Wonderful!” exclaimed the professor.
“Darned if it ain’t wonderful,” assented Haypole.
“Who ever imagined that such a place as this existed?” said Leo.
“We are now under the great Everglades of Florida. It remains for us to find out what sort of place it is,” spoke up Dick Vincey.
“I agree with you there,” returned Prof. Easy. “Come, let us be moving. It is strange what has become of the man and dog and their pursuer.”
They stepped off to the left, and kept walking until they emerged from the mist, which seemed to settle back on either side of the opening.
As they left it behind them they saw that only a sort of twilight prevailed in and about the underground place.