Halong Bay Vietnam 2016

The legend of Da Go Cave
There are various versions of the story about this cave told by Halong residents. One of them has to do with the fight against Mongol invaders under the Tran Dynasty in the 13th century. The story goes that Dau Go Cave is where wooden stakes were hidden before being driven into the Dang River stream to stop the Mongols. This is why the cave is called "Dau Go" (Wooden Piles Cave).