G. Harvey Ralphson, The Call of the Beaver Patrol; Or…
“ Slowly the chasm widened. The ground under the boys' feet seemed to be unsteady. With a swaying motion it dropped off toward the coast, except at the very edge of the cavern, which seemed to be doubling down like a lip folded inside the mouth."It strikes me," Frank said, "that we would better be getting the team out of the track of that chasm! If we don't, the horses and wagon will take a drop."Tommy and Sam both sprang forward, but it was too late! The southern line of the chasm seemed, to drop away for fifty feet or more, and trees and rocks crashed into the opening. ”
