Which geographical feature did Heracles move to clean out the Augean stables?

• A. Mountain
• B. Sea
• C. Lake
• D. River

Answer: (D)

Redirecting a flowing body of water is what made the task possible. In the myth, Heracles solves the problem of the Augean stables by diverting rivers to wash out the filth. He redirected rivers—traditionally the Alpheus and the Peneus—so their waters would flood the stables and carry away years of manure in a single day. A river is the right answer because the solution hinges on moving a watercourse to flush out the muck; moving a mountain, the sea, or a lake wouldn’t provide the same draining effect. This clever use of geography shows how integrating natural forces with problem-solving can achieve a seemingly impossible cleanup.