Thien Ha is a beautiful small cave in Trang An Landscape Complex in Ninh Binh province.
VNA
Thien Ha cave is part of the 200-metre-high Tuong Mountain (Mount General), a defensive fence protecting the ancient capital of Hoa Lu from foreign invaders in the 10th century (Photo: VNA)
The entire cave is around 900 metres deep, but only 700 of which are accessible by foot (Photo: VNA)