THE GIANT GEYSER.
THE CASTLE GEYSER.
Thus far we had seen merely geysers which arise from pools; but, presently, we approached one which in the course of ages has built up for itself a cone, or funnel, for its scalding waves.
"That," said our guide, "is the Castle Geyser."
"That rock a geyser!" I exclaimed incredulously, "it looks like an old ruin, without a single indication of activity; save, possibly, the little cloud of steam that hangs above it, as if it were the breath of some mysterious monster sleeping far below."
"If you doubt it," he replied, "go nearer and examine it."
ON "ITS FLINTY SIDES."
We did so. I scrambled up its flinty sides, and found an opening in the summit three feet wide. I touched the rock. It was still warm, and yet no water was discernible. No sound was audible within its depths.