At once everybody was interested, even Frank himself.
“You shall have your desire, professor,” he declared.
Accordingly the Dart was brought to a stop and rested upon the bed of the cavern. The diving suits were brought out.
It was decided that Frank and Barney should accompany the professor this time.
Pomp and Captain Bell were to remain on board the Dart.
The searchlight illumined the walls of the cavern in beautiful style. They were of great beauty.
Overhead they were crystal-like in their character, and the declaration by the professor that they were of quartz did not by any means seem far fetched.
The diving suits were donned, and the three explorers, well armed with ax and knife, left the Dart.
The floor of the cavern was tolerably smooth. They easily made their way over it, and Von Bulow was soon at work.
It did not take the professor long to get to work with his hammer.