The three men went quickly down the staircase. They were soon in the passage which had been followed by Barney and Pomp.
But they did not follow it far. Their progress was checked. A great wall of earth and stone confronted them.
At once the truth flashed upon Frank.
“A cave-in!” he declared. “They are imprisoned!”
Randall was deadly pale as he turned to Frank.
“My soul! You don’t think they are under that debris?”
“Let us pray not!”
“What shall we do?”
“There is but one thing!”
Frank threw off his coat. Then he turned to the stairs.