There was a narrow passageway behind the chamber and Sam Barringford squeezed into this.
"Don't reckon I can make it," he panted presently. "Seems like I was a leetle too hefty. Dave, do you want to try it? Might be an opening to the outside world, an' if there is, we won't have to go through thet water ag'in."
Taking the torch, Dave pushed into the opening, which gradually grew smaller and smaller until he had to crawl on his hands and knees.
"Tight fit, eh?" called the old frontiersman after him.
"Yes, but it may be larger further on," answered the young pioneer, as he continued to advance.
Fortunately the passageway was dry, so he had nothing to fear from water.
He progressed fully fifty feet, when he saw a large opening beyond.
"I'm coming to another room!" he shouted back.
But a sharp stone over a foot high barred his further progress. The stone appeared to be rather loose, and he fancied he could push it out ahead of him. Laying down the torch, he caught hold of the stone and soon had it turned from its resting place.
"What are you doing?" called Barringford.
"Getting a stone out of my way."