Herakles stormed towards the cave. A terrified Kakos blocked the entrance with a vast, immoveable boulder, forcing Herakles to tear at the top of the mountain to reach his adversary. Kakos attacked Herakles by spewing fire and smoke, while Herakles responded with tree branches and rocks the size of millstones. Eventually losing patience, Herakles leapt into the cave, aiming for the area where the smoke was heaviest. Herakles grabbed Kakos and strangled the monster.