For his crimes against Olympus, Zeus decreed that Sisyphus would spend eternity pushing a boulder uphill, never resting. The other gods agreed it was a just punishment, and promptly forgot about the mortal.
But as the centuries passed, Hades found that he had to bring in larger and larger boulders as the mortal gained strength from pushing constantly pushing the stone uphill.
The god of the underworld sent messages up to his siblings on Mount Olympus, but the scrolls went unread.
Until one day, the Palace of the Gods shook as Sisyphus put his shoulder against the mountain and pushed.

“Perfect Balance Boulder, California Desert” by moonjazz is licensed under CC BY-SA 2.0.