This one is easy to spot once ground zero is reached. Getting to ground zero is the challenge. We've rated this a 4.5 on terrain because there is a possibility that it can be reached by foot. Honestly though, we're not sure we'd recommend going this route. We'd bet good money that, at the very least, there'd be some muddy swampy, who knows how deep, wading involved. We would suggest boat, canoe, or kayak as the easier ways to reach the cache.
The cache itself is small in size and contains a few fishing type items for trade, as well as a logsheet and pen.
Goodluck!