This cache is located only a short walk away from the peak of Eglwysilan, at the corner of Ffynnonbwla Rd and Eglwysilan Rd. It's easily accessible on foot and by vehicle and offers some great views at GZ (especially as daylight is fading!)
The cache shouldn't be too difficult to find but it isn't a 1 difficulty either. Please replace as found and just slightly out of view.
Feedback on the co-ordinates is always appreciated.
Have fun!