Every Halloween I rewatch the viral vine video...
It's Frikin Bats
Originally posted in 2013, this has become a classic.
Get close and look in the area where bats would be found. Fair warning that if you don't want to be close to nature and subsequently baby bats (not real ones) then this may not be the cache for you.
There are some super fun caches along this path thanks to a local hiding legen
I park in the lot closest to the trail head, it's less than five minutes from the trail head to the cache.
Don't enter the ditch, it's on the side with the fence.