Looks like an amazing place. I've been to Zion a few times and haven't heard of this spot. Now I can't decide if I should do the technical canyoneering route to this spot with a point and shoot waterproof or if I should do the hike in that lets me stay dry and take my DSLR.
It is a VERY cool spot. Its about 3.5 miles one way, so not an easy hike, especially w a backpack full of photography gear. Its a lot of hopping up and over rocks, jumping the river, scrambling, so its a fun but exhausting hike. Well worth it when you see the payoff at the end. My aunt said the exact same thing about the movie set.