Need Ruling on a Bizarre Situation

[Colin L]

I know that area as it has come up in a number of tournaments that I've officiated there. The key that we have come up with is that the ball must be found past the white stakes to be known to be in the red penalty area. The white stakes are defining the edge of the golf course property and go up to the little path that runs to the left. There may be a stake misplaced but the white does stop at the corner and goes left. During out tournaments we never had anyone go that far left so never became a problem but we were prepared to call it out of bounds unless the ball was found or it was 100% known that it flew into the penalty area but that was usually going to be difficult to know as the stroke to that area was a very long shot.

Could you explain how you know what area is marked by only two red stakes? Can anyone?