Stop on JFK Drive, where water from Rainbow Falls appears to run towards Lloyd Lake, put the car in neutral, and it appears to roll uphill. The slope is an illusion — the surrounding land hides the true horizon, so a gentle descent reads as a climb — which has never once stopped anyone trying it with a bottle of water. A public road, so pull over sensibly and watch for traffic.
Filed under folklore: stories a place tells about itself, passed down and still repeated.