Originally Posted by sofingaw
To clarify, the original 2 club lengths was from the edge if the obstruction, not necessarily the nearest point of (in this case, stance) relief from the obstruction.
FYI. Read the last paragraph of this decision. Vertical distance is considered when determining the nearest point of relief. Can be an issue if the pipe is on an angle and the ball not by the opening.
Ball Lying on Elevated Part of Immovable Obstruction
Q.A ball comes to rest on the elevated part of an immovable obstruction, such as the walkway of a bridge over a deep hollow. What is the ruling?
A.If the player elects to take relief, vertical distance is disregarded. The nearest point of relief (Point X) is deemed to be at the point on the ground directly beneath where the ball lies on the obstruction, provided the player would not have interference, as defined in Rule 24-2a, at this point. The player may proceed under Rule 24-2b by dropping the ball within one club-length of Point X.
In a situation where there would be interference with some part of the obstruction (e.g., a supporting column) for a ball positioned at Point X, the ball is deemed to lie at Point X. The player may proceed under Rule 24-2b by determining the nearest point of relief for a ball lying at Point X.
The procedure is different where a ball lies underground (e.g., in a tunnel). In such a case, all distance, whether vertical or horizontal, is taken into account when determining the nearest point of relief. In some cases, the nearest point of relief would be near the entrance to the tunnel, and in other cases it would be above the tunnel and would need to be estimated.