First Water Trailhead to Peralta Trailhead
(continued:) At the end of the lecture, a little old lady at the back of the room got up and said: "What you have told us is rubbish. The world is really supported on the back of a giant tortoise." The scientist gave a superior smile before replying, "What is the tortoise standing on?" "You're very clever, young man, very clever," said the old lady. "But it's turtles all the way down!" --Wikipedia