"Stop! It's not fit to walk here!"
"Why, it's like a bog!" declared Sam, after testing it.
"We'll have to go inland a distance," said Tom. "Come on," and he turned back and struck out for the palms and bushes beyond.
It was then that the Rover boys began to realize what was before them. Scarcely had they penetrated the interior for fifty yards when they found themselves in a perfect network of trailing vines. Then, after having pulled and cut their way through for fifty yards more, they came to a spot that was rocky and covered with a tangle of thorny bushes.
"Wow!" ejaculated Tom, after scratching his hand and his leg. "This is something prime, I must confess!"
"What I call hunting a treasure with a vengeance," added Dick, dryly.
"I move we go back," came from Sam. "We seem to be stuck in more ways than one."
"Perhaps it is better traveling just beyond," declared Dick. "I am not going to turn back just yet anyway."
He took the lead, breaking down the thorny bushes as best he could, and Sam and Tom followed closely in his footsteps. It was rather dark among the bushes and almost before the three knew it they had fallen headlong into a hollow.
"Well, I never!"