"That's Boy Scout talk all right!" exclaimed Elmer.
"Yes, the three stones, piled one on top of the other, mean that there is danger in following the trail. I don't understand exactly what kind of danger can be threatening us, and so the only thing we cart do is to go on and find out," Will said with a glance backward.
The other boys now came up and a short consultation was held. It was decided to leave Sandy and Dick at the point where the explosion had taken place, while Will, Elmer and Jimmie followed on down the gangway.
"Now whatever you do," warned Will as the two boys were left behind, "don't leave this gangway for a minute. If Ventner isn't out of the mine now we don't want him to get out. He may money or he may not. That is one of the things no fellow can find out at this time, but whether he has or not, we want him to give an account of himself before he leaves the Labyrinth. He's got several important questions to answer."
The boys promised to watch the passage faithfully, and the others passed on down the gangway, flashing their lights in every direction and making no pretense of moving quietly.
"Look here," Jimmie said after they had proceeded some distance into the mine and discovered nothing of importance, "I have in my possession a great idea! Want to hear about it?"
"Sure!" laughed Will.
"We're making too much noise."
"Making too much noise in order to attract the attention of a couple of lost youngsters?" asked Elmer.
"'They're not lost!" insisted Jimmie. "They've been lured away or dragged away! We don't know how many men were in the mine with Ventner?"