In vain we dragged out some of the pieces. The only effect was that the larger ones became detached and threatened to roll down the gradient and crush us. It was evident that the obstacle was far beyond any efforts which we could make to remove it. The road by which Maple White had ascended was no longer available.

Too much cast down to speak, we stumbled down the dark tunnel and made our way back to the camp.

One incident occurred, however, before we left the gorge, which is of importance in view of what came afterwards.