If you peer over the fence & look down through the tangles, there indeed is the Passaic River. Why this sign? ("Passaic River," with a down arrow.) Do people wonder what river they are seeing? Or where the tremendous amount of water goes? Or are we being alerted to the presence of a river, which happens to be the Passaic? For a national park, there wasn't a lot of signage (this & a recent plaque on the history of the area were it, & almost no guidance to get to the spot. Oh, but that's New Jersey, I just recalled—I never knew what town I was in when I was driving around out there: Jersey for Jerseyites! must be their motto) or any park rangers that I could see, & a LOT of trash, because, as Dawn pointed out, the national park budget was severely cut in the previous administration. We were seeing a real-world outcome of a D.C. decision.
Tomorrow: the abattoir.