The hike to this cache offers a view of the slough and its wildlife, or the freeway and its "wildlife," depending on which route you take. The container is large enough for some micro swag, but BYOP.
We named this cache after a nearby object that is peeking out from under a small sea of blackberry vines. Is this evidence that a submarine once attempted to invade via Struve Slough, and only made it this far before getting stuck? 
Fortunately for you (and us), we didn’t hide a cache in the middle of that sea of vines.