The book speaks of a hike from here to an even more secluded waterfall, but the only thing that slightly resembled a path through the brush was right next to this sign, so we headed back to the car.
Great TR!
Just FYI (in case others get scared off too), the hike and falls beyond that sign were really great. The hike to it is a bit more strenuous than some of the others on RTH, but well worth it IMO. It takes you farther up the stream, and you walk along this man-made ditch (I assume it's an aqueduct to redirect the water for some reason) and over a viaduct, to the pool/falls.
Here's the aqueduct you walk next to and the viaduct you have to walk across. I stripped the audio, so you won't hear anything.
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Aqueduct tunnel leading to the pool/falls. I suppose you could try walking through it if you want, but we hiked over the tunnel to get to the pool.
The falls and pool at the end.