As far as 47 kilometers from Ha Giang town, and situated at an altitude of over 1000 meters above sea level, fresh air, wild scenery, majestic nature with endlessly range of Limestone Mountains. The nature has granted here a wonderful place called “Cô Tiên Double Mountain”, it is two tops of the limestone mountain. Its shape is the same as “two breasts” of the girl, lie in the middle of the field in Quan Ba. This actually is an unique landscape of Tam Son in particular and Dong Van stone plateau Geo-park in general.

“Cô Tiên Double Mountain” is truly product of the process of leaching, erosion with regular practice in the destruction of the fault zone in Quan Ba- Huong Cha that its last phase of activity occurred about 5 million years ago. It is the fact that, there are many karst scenes in the valley of Quan Ba, only “Cô Tiên Double Mountain” is the most beautiful and located at the most favorable position to visitors in Vietnam travel can see.

If you are in your tour to the provinces of the Northeast Vietnam, this double mountain should not be skipped when passing Ha Giang province.