Did this the other day just to see how it turned. It revealed a disdvantage of this approach in that its very hard without being very verbose to depict all the problems on the rounded boulders we tend to have. Works ok on long flat walls but not so good here.
This inspiring guidebook contains over 1700 things to do and places to see across the length and breadth of the island of Ireland. It’s perfect for planning days out, weekends away and longer holidays.