This is the former location of a puzzle cache that was archived. It's a nice spot where a lot of folks from out of town can log a quick find while they enjoy being tourists.
The cache is not visible so you will have to use your geo-senses and actually hunt for it.
Be Advised that the cache may be wet from time to time. So save your snarky comments and just log the find. I love my geocaching family, but its been painfully obvious over the years that the majority of you don't understand the concept of a rubber O-Ring or how containers rely on it to keep water out. The container is replaced several times a year, but it only takes one afternoon shower to ruin it again if not closed properly.