In Greek mythology, Sisyphus or Sisyphos (/ˈsɪsᵻfəs/; Greek: Σίσυφος, Sísuphos) was the king of Ephyra (now known as Corinth). He was punished for his self-aggrandizing craftiness and deceitfulness by being forced to roll an immense boulder up a hill, only to watch it come back to hit him, repeating this action for eternity. Through the classical influence on modern culture, tasks that are both laborious and futile are therefore described as Sisyphean.
I hope that you don't find this cache futile or laborious. It should be a quick find. It looks like Sisyphus gave up right here at ground zero! LOL