Strange to have taken so long after the 2014 reprint, you may think, to correct an error, and a further change to the route should help. So, walk 11 in the Hillwalks from the Settle to Carlisle railway stations, page 102,second para, it should read “…. a further 250 yards watch for an oblique narrow path coming from the LEFT….” (not right).
After the gate and heading to Colt Park Farm, take the left fork in the path just before a short rise, follow this round the rise, and when you see a wall ahead and one to the left with a gate in it, head 90 degrees left to that gate on a thin but definite path. That gate is the west gate of the quarry boundary wall mentioned in the book. My description of the path coming from the quarry’s east end says that the path then goes out of this gate north, when of course it is South! The remains are on the right of the path heading north to the “west gate”, before the limestone pavement.