Beautiful trace with deep pools and stunning canyons. The Golden Grotto itself is a 20min walk up a side stream after a 3-4 hour walk up the Sanzhan River. Right before the grotto there are a couple of deep pools to swim across and a couple of waterfalls to climb (but they seem to always have ropes installed). It's quite a popular trace with several ... parties going up per day on the weekends. It was not difficult, but requires a bit of fitness. You can even get there by public transport. I took the train there and back and was able to walk from Jingmei station to the trace entry point without much trouble. There are a couple of little shops in the village, but food is scarce. Make sure you supply before you go.