The two men gazed upon the spot wholly spell-bound. They had never seen anything like it before.

It was now easy to understand why wandering tribes of Indians and ignorant white men shunned the valley.

The sight was one well calculated to appeal to one’s sense of superstition.

To the untutored savages or the white man unfamiliar with natural sciences, the exhibition certainly partook of the supernatural.

There were large areas wholly free from this peculiar display.

Bill Swazey the hunter was unable to understand the phenomenon.

“Great bars!” he gasped, “thar ain’t much doubt about this place being ther abode of the devil is ther?”

“I think there is a good deal of doubt,” replied Frank.

The trapper was astonished.

“Eh!” he rejoined. “Praps’ ye kin account for thim devilish balls av fire.”