"We've got to get out somehow," said Dick, at last. "But to climb that wall seems impossible."
"Let us try it, anyway," returned Leander.
He found what he considered the best place, where several jagged rocks projected, and by digging his hands into the soil succeeded in pulling himself up a distance of eight or ten feet.
"Look out!"
As Dick uttered the cry he leaped back out of danger.
Down came several of the rocks, accompanied by a great mass of dirt.
Leander followed, to roll over on his back on top of the pile.
"Great Cæsar!" gasped the fallen one. "I didn't think I was going to pull down the whole wall over me."
"Don't try that again, or we may be buried alive," cautioned Dick.