We had started our round at 7am in heavy fog. By the time we got to the par 3, 4th hole, the fog was lighter, but we could barely see the flag. I hit the ball solid, on a good line, but it dissappeared into the mist. As we arrived greenside we did not see it on the green. I grabbed my wedge and putter and looked over the back of the green. When I saw no ball back there I looked in the cup and Wow! There it was.