The co-ordinates given are false. Do not go there. There is nothing there to help you. The puzzle is based on my favourite from my favourite. To find the cache you will need to solve the below and be able to competently use rope access equipment. As rope access carries risk of death or serious injury then I or geocaching.com bear no responsibility for your safety.
IWTML TOFTO OFUTW NWIOV FWREV NUOON UEEFO ERZSW ORVTR PTUOF VEERW IIVFH EE
You're welcome to post photos of your log or climb, but nothing that shows the view from the tree as it quite distinctive. You will know when you have solved it and your sat nav will take you to the only parking point. The first bough you reach is obviously rotten. I predict it will come down in the next wind. The second has wood worm, but the rest of the tree looks good and the boul held me.