There are two ways of retrieving this cache. You can climb, or you can use a tool. I have provided images demonstrating both methods. I have rated this cache a T5 as you will probably require equipment, whichever method you choose. Please take care. Please only attempt to retrieve this cache if you are confident you can replace it.
Please do not try to park on the dual carriageway. A waypoint is given for a public car park, and the cache is a short walk away along a footpath.
I had trouble getting accurate coordinates due to the tree cover so I took an average of readings on different days. I have also included a hint to help you identify the correct tree.
As a little extra incentive I will buy the FTFer a drink if they are coming along to the event in Stirling on the day of publication.