Geograph - photograph every grid square

I had around half a day free to walk with my dog while my wife was demonstrating spinning at the Highland Sheep Day at Ardgay, close to Bonar Bridge. I had heard there were some fine waterfalls west of Lairg that knocked spots off the paid attraction of the Falls of Shin. I quickly found a walk description on the Walk Highland Site entitled Cassley Falls and Rosehall Forest. Link and decided this was the place to go. Having parked...