Located in Dong Van district is Lung Khuy cave, only about 10km from Quan Ba. Ha Giang travel experience must definitely note this place to visit or you will regret it. Dong Lung Khuy is also the most beautiful cave in Ha Giang according to the experiences of young people. Coming here, you will be overwhelmed because it is only about 300m deep, but the scenery is great, going deep inside will see a lot of sparkling stalactites.