Hi. I have just visited this cache today - Pirateology-Land Navigation - but there is NO trackable in the cache.
It may have been picked up by another cacher but not recorded here?
Unfortunately I believe this trackable has been Muggled.
I found the cache container very close to a popular footpath used by muggle dog walkers. A short distance away is a popular football field, and urban housing, so the trackable may (?) have been found by local muggle children?