As their investiagtion leads back to the mountain, the kids are once again scared off - this time by Bigfoot? As they run down the mountain they perchance to see a light from way atop Stone Face, in fact it's in the eye of the monkeys skull. When thye climb to the top they discover it's a cave. They find a secret meeting of a few town members going on.They hover outside listening. When they break in on the group - everyone scatters, but one of the towns people sets off some dynamite which blows up the cave. After much explaining the kids finally discover what the treasure is, and why the legend was born.