Tam Coc – Bich Dong is a famous destination, located in the Ngu Nhac Son mountain, belonging to Ninh Hai commune, Hoa Lu district, Ninh Binh province.

Tam Coc – Bich Dong consists of two distinct attractions: Tam Cốc, a flooded cave karst system; and Bích Động, a series of mountains and pagoda. The Tam Coc name derives from its three enchanting caves: The Hang Ca, Hang Hai, and Hang Ba caves. Tam Coc is also known for its astounding landscape of river with rows of paddy fields lying on its sides. It is also surrounded by marvelous limestone karst peaks.

This place is a scenic landscape dominated by rice fields and karst towers. Tam Coc Grotto is adorned with beautiful stalactites and stalagmites of different shapes and colors that sparkle like gemstones that will make you impressive. When drifting under the Grotto, you can feel the deeply pure atmosphere with the special smell of fresh river water and cool air from karst mountains when reaching each of the 3 caves in turns.

Exploration of caves at different altitudes has revealed archaeological traces of human activity over a continuous period of more than 30,000 years. They illustrate the occupation of these mountains by seasonal hunter-gatherers and how they adapted to major climatic and environmental changes, especially the repeated inundation of the landscape by the sea after the last ice age. The story of human occupation continues through the Neolithic and Bronze Ages to the historical era.

Tam Coc was invaded and reworked by the sea many times in the recent geological past but is now emergent on land. Landform development over a period of more than five million years produced a scenic landscape of extraordinary beauty – a blend of towering cliff-bounded mountains draped in the natural rain forest,  surrounded by huge and deeply developed internal basins whose clear and quietly flowing waters are connected through a myriad of underground streams and caverns, many of which are navigable by small sampans carrying tourists.

According to the Internet