Xianren Bridge () is a

natural arch A natural arch, natural bridge, or (less commonly) rock arch is a natural landform where an arch has formed with an opening underneath. Natural arches commonly form where inland cliffs, Cliffed coast, coastal cliffs, Fin (geology), fins or Stack ...

created by flowing water that has the world's longest recorded span. Carved of

limestone Limestone is a type of carbonate rock, carbonate sedimentary rock which is the main source of the material Lime (material), lime. It is composed mostly of the minerals calcite and aragonite, which are different Polymorphism (materials science) ...

karst Karst () is a topography formed from the dissolution of soluble carbonate rocks such as limestone and Dolomite (rock), dolomite. It is characterized by features like poljes above and drainage systems with sinkholes and caves underground. Ther ...

, the formation bridges Buliu River in the northern

Guangxi Zhuang Autonomous Region Guangxi,; officially the Guangxi Zhuang Autonomous Region, is an autonomous region of the People's Republic of China, located in South China and bordering Vietnam ( Hà Giang, Cao Bằng, Lạng Sơn, and Quảng Ninh Provinces) and the ...

China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...

. Because of its remote location, accessible only by a three-hour rafting trip, it was not discovered until 2009 and remains relatively obscure. An expedition in October 2010 by the ''Natural Arch and Bridge Society'' first measured the bridge's span and found it to be in length.Jett, Stephen
China Diary
The Natural Arch and Bridge Society

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Drone footage
{{10Arches Natural arches of China Landforms of Guangxi Rock formations of China

See also

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