Off the beaten path, I went here with a group of 30 locals in September 2016 at the start of the rainy season. We hired local guides as the path to the top is overgrown. Total ascent time took about 2.5 hours at a slow pace with regular stops and descent was 2 hours. I'd say difficulty level is only 3 out of 5 (as an experienced hiker), with the first 75% a gentle slope but lots of crossing through the steams (you will get wet up to knee or waist height) and the final 25% quite a steep ascent, often needing to use your hands. Care needs to be taken as the path gets wet and can be quite slippery. One attraction here is the pink, champagne mushrooms (poisonous) which are quite beautiful. Then it's kwok e-dok waterfall itself which is quite a magnificent site but also fun to play in the pools (but a bit cold). Do take care as this is still quite a natural and undisturbed attraction. There are only a few ropes in a few places and the rest you'll have to hold on to bamboo or rock faces. Climbing to the top was a bit slippery as I didn't have the best sandals on so plan where you might fall as you don't want to be swept away down the waterfall. Fun day trip that's worth trying once if you get the chance.