One legend of the Yurok people says that, far out in the Pacific Ocean but not farther than a canoe can paddle, the rim of the sky makes waves by beating on the surface of the water. On every twelfth upswing, the sky moves a little more slowly, so that a skilled navigator has enough time to slip beneath its rim, reach the outer ocean, and dance all night on the shore of another world.from The Fantastic Ursula K. Le Guin
Image via California Slaughter, See also a Yurok house here