It seemed to be carved out of a stone which was emerald-like in color and broken into various conformations.

The sight was dazzling, and the explorers gazed upon it spellbound.

“Begorra! but it’s a beautiful sight!” cried Barney, with mouth agape. “Did any av yez iver see the loikes av it?”

“Indeed, it is grand beyond anything I have ever seen!” exclaimed Stanhope.

But Frank was the first to recover from the spell of wonder upon the party.

He was looking for the whale.

It had vanished into one of the labyrinthian passages and left no trace behind it.

How far this extended none in the party could guess.

But the Dolphin was able to penetrate some distance into the cavern, for the arches were high.

For what seemed like an interminable distance the Dolphin threaded its way into the depths.