Follow the hidden path to get to the cache.
(Well I never knew it was here and I've been living near here for over 10 years
)
'D' is set high as the cache might be a difficult one to spot - it is likely you will see the attachment before the cache!
You are looking for a black bison. Good Luck and happy caching, folks!
Fb Fbeel. ZGVPG. BZT!