Trang An Landscape Complex covers a very large area surrounded by rice fields containing three distinct areas: Hoa Lu Ancient Citadel, Trang An, and Tam Coc Bich Dong. Collectively it is called the Trang An Landscape Complex, situated near the Red River Delta. This is a mountainous area blending mountains surrounded by water basins that are connected through underground streams and caverns. Trang An is also about cultural points such as pagodas, temples, palaces in addition to archaeological finds. The karst tower landscape of Trang An dominates the landscape as an array of rock towers with vertical walls above the surrounding land and water creating a patchwork of color. 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.