They scrambled through branches and followed the sound.
Then will said, "It's coming from under that mound."
And that's when they saw it—a dark open hollow.
They stopped in their tracks and took a big swallow.
"A cave," Wally whispered. "We can't go in there."
And Will said, "It could be a den for a bear."
They heard Fitzhugh howling from somewhere inside.
And Cecil was tempted to run off and hide.