These falls have the potential to be spectacular, and even at lower flow are pretty cool.
The 'easiest' access is by parking at GCAK8H8 " and then the lightbulb came on!" which can be accessed via Wiener Main, turning right up the hill at 2km, and parking at the end of the road. From here, it's only a 0.5km hike, although it's very steep and requires crossing a log (there is a rope). Taking longer paths for the lower falls makes for a longer hike, but less dramatic elevation gain/loss. Or, you can make it a loop. Pot Luck.
However you get there, you will still be challenged by some exposed sections of trail and slippery rocks. Avoid high rainfall days.
The terrain rating is higher than you might experience in summer, but is reflective of spring/fall conditions.
Cache is located at the base of a thin cliff/buttress of rock, that has a narrow maple growing on a ledge above the cache. Cache is chest height on a small ledge under rocks.