This is one of the caches we set up during our through beautiful Ha Giang loop. We've put it there to both encourage you to go through the picturesque loop and to visit this interesting place in particular. Our goal was to put caches in places which normally might be omitted by some people. This means we didn't place them at the stops right next to the main road as they are already crowded and probably visited by everyone.
Lung Khuy cave
To reach the cave, you have to leave the main road and go to the marked parking spot. From there you have to walk 1,5-2km (various sources provide a different value) through a path with quite many steps. You'll be rewarded with beautiful views on the way and very interesting cave at the end (I'm not mentioning the obvious: finding this cache).
When this cache was being set up, the ticket to the cave costed 50 000d. You don't need the to enter the cave to find the cache but I strongly encourage you to.
Please be very careful while picking up and putting down the cache. Due to language barrier, even the cave cashiers don't know about the cache.