Milky Way Moonset. The Milky Way is almost exactly vertical, plunging down into the Pfeiffer Beach Keyhole Rock, a natural arch carved by erosion. But what’s that glow in the hole? That’s the crescent Moon, setting into the horizon but blocked by the rock itself. The Moon’s path across the sky against the background stars passes fairly close to the center of our spiral galaxy, which we see edge-on because we’re inside it.