Thats one big ol' tree.
This Tree has been in the Urenui Campground for longer than iver been around, it towers above everything and is one of the biggest in the campground.
The Campground is riddeled with muggles in summer so be stealthy when finding this cache, i may advise bring tweesers for this cache but its up to you.
You will also need your own pen/pencil.