I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission requirements unknown.
There is a single-track road that goes all the way to the falls, though at points I was glad of the 4x4 (I wouldn't want to be doing it in a little hatchback). There is a space for parking at the falls that's big enough for two or three vehicles.
Be warned that there is a path down towards the falls, but it is quite steep and has some deep 'steps' with no handrail. It takes you to the top of a drop (~20ft cliff) down into the gorge where the waterfall is. You can't get right down to it, so you need to fly between some trees and then down. My Mini 3 struggled to get enough satellites for GPS and got very wet from the mist.
In summary: It's a nice location, but it's a bit out of the way and not the easiest of locations for an inexperienced pilot.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 16/11/2022. It remains the responsibility of any pilot to check for any changes before flying at the same location.