"Sure we do!" replied Tommy. "Two columns of smoke ask for help."
"Then there must be Boy Scouts in trouble on the other side of the chasm!" the doctor concluded.
"That's about the size of it!" Frank exclaimed.
"Look here," Tommy declared, "we've just got to get across that crack! I wonder if it would be possible to find walls so slanting that we could pass down this side and up the other."
"Well, even if we did," Sam argued, "there's a rush of water at the bottom. I don't see how we could get across that."
"I know how we can get across it if we find the walls accommodating," Tommy exclaimed. "You saw how the trees tumbled into the chasm, didn't you? Well, if we can find a place where the moraine was heavily wooded, we'll find a bridge of tree trunks across any water there may be at the bottom! And the bridge may not be very far down, either!"
"Great head, little man!" laughed Frank.
"You ought to consider the matter very seriously before entering the chasm at all," suggested the doctor. "Remember that it is uncertain as to size and that the walls are liable to crumble."
"But see here," exclaimed Tommy, "there's a Boy Scout signal for help on the other side, and we've just got to get across! For all we know, the cabin may have been wrecked by the earthquake, and the boys may have been injured in some way!"
"I'm game to go!" shouted Sam.