They throw a rock into it and the rock disappears without a splash. Next they tie a rope around another rock and throw that in. The rope goes taut and the rock again disappears, as does about 10 feet of rope, the end of which is now frayed.
They throw a rock into it and the rock disappears without a splash. Next they tie a rope around another rock and throw that in. The rope goes taut and the rock again disappears, as does about 10 feet of rope, the end of which is now frayed.