Danxiashan UNESCO Global Geopark is the Redstone Park of China. It is located in the northeast of Shaoguan City in Guangdong Province and has a total area of 290 km2, about half of it is densely covered by ‘danxia landform’. Its highest peak is Bazhai with an elevation of 619 metres. Danxiashan has long been a national park and nature reserve. It became an UNESCO Global Geopark in 2004 and a World Heritage Site in 2010.
Characterised by multi-layered red sedimentary rocks of sandstone and conglomerate, the area was formed in a basin by fluvial deposition 140-65 million years ago. Warm and wet climate enhanced oxidation in rocks and turned the colour of their sediments to red. They were later uplifted, undercut by water and accelerated by rock fall to create the present danxia landform. It is geologically significant for studying the evolution of Earth’s crust. The area bears rock outcrops of different geological periods from Sinian, Paleozoic Mesozoic to Neozoic. The Cretaceous sedimentary strata which form the present landscape are particularly important for studying dinosaur extinction, life and mammal evolution and regional stratigraphical correlation.
Danxiashan is currently at its mature stage of landform development with deposition, uplifting, weathering and erosion taking place at the same time to form the diversified shapes which is typically representing the characteristics of such kind of landform. As the naming site of danxia landform, Danxiashan has been studied for almost a century as a unique type of landform by Chinese geoscientists with the publication of over 300 academic papers. It becomes a global study centre of red beds in warm and humid regions. It is also a research centre for studying the evolution of the ‘Bio-Island Effect’ of ecological evolution, complex differentiations of vegetation and bio-system in highly isolated hills and mesas environment. The special landscape and the humid monsoon climate permit the growth of evergreen broadleaf forests, endemic plants, endangered and new species such as Danxia Viola, Danxia orchid, Danxia Firmiana and Danxia Chiritopsis.
Danxiashan also has great natural aesthetic value because of its rivers (Jinjiang and Zhenjiang), red peaks (Yangyuanshi, Zengmaofeng), cliffs (Chahufeng, Guanyinshi), caves (Longlinyan), canyons and valleys (Bazhai).