In order to find this cache, you must first
have found the other ten caches in the Ystradfellte
series.
This is a nice walk from the Ystradfellte village car park.
Alternatively, you can park at the Blaen Llia car park and continue
on a little farther past Maen Madoc.
The cache container is an ammo box protected by a combination
lock. In order to open the lock, you must sum the numbers found in
the other ten Ystradfellte caches. When you're done with the cache,
please return the combination to its default value of 0000.