The illusion of perspective suggests this jetty ramps gently down to the waterline in the distance.
Our common sense knows better. Or does it?
If you can tell this is Henley Beach Jetty you'd know there is indeed a gentle ramp down to the waterline after all. If you don't believe me, go check for yourself.
Photo: Robert Rath, 'Day 756, Down To The Waterline' 25s f/11 ISO320 15mm