An important Local Rule applies on the 6th/15th hole:
“On the 6th/15th holes only, on the left hand side, there are several outcrops of rock.
If a player’s ball lies on an outcrop of rock or if the outcrop of rock interferes with
the player’s stance or area of intended swing the player can take relief in accordance with
Rule (16 -1a). Any other outcrops of rock on the course remain an integral part of the course.”
The image below shows how to obtain relief: