Assembly Dragon Cave is at the foot of Ma Hill (Horse Hill) between Moon Hill and Big Banyan Tree. It is actually two caves joined by a short river. The two caves are Black Cave and Water Cave.
The cave does have some interesting stalactites and stalagmites which are lit up with colourful lights. There is also a short boat trip between the two caves.
This cave gets many poor reviews as you sometimes have to wait a very long time to go in, then join the big number of domestic tour groups.
If its not very busy then it is a worthwile option to visit if you visiting that area.