After checking some of my other nearby caches, I had come here with the thought of setting something a little more extreme but instead came across this pen so changed my mind.
This can be done as part of the Longfield Hill Loop or on it's own. You can park near LHL22 and walk through the wood to the cache.
Va fgne funcrq fghzc jvguva n pbhcyr bs zrgref bs gur cngu.