The cache is hidden near the top of Sawel Mountain on the Co Tyrone side.The Sperrin Mountains streching along the border of counties Tyrone and Londonderry can be described as wile, untouched and beautiful, spanning 40 miles the Sperrins mountain range is the largest in Ireland, walkers can expect undulating hills covered in heather, quiet valleys, boggy uplands teeming with wildlife.There are 10 summits above 500m with the highest of the range, Sawel Mountain peaking at 678m (2224ft) try not to sink into any of the bog holes on the way up or back down as the ground is very boggy in places.