This is a bonus cache for the Historic River Town Adventure Lab cache. After enjoying a walk along the river to do the adventure lab, you need to travel a kilometre or two south the get to the bonus cache.
Cache is a 200ml sistema tucked in front of an obvious fence post.
2021-10-27: For those wondering about the apparently random final location, the cache was deliberately placed close to the coords of an early nemesis cache, the infamous Nano-Poi. That cache was archived in 2012, with a final tally of 33 finds and 48 DNFs.