It is an iron pillar in a rural area of ​​Western India. According to legend, the iron pillar was cast in the 5th century AD. The solid steel pillar is 7m high, with ancient patterns decorated on the top. According to local people, this iron pillar was cast to commemorate a king.

Many researchers still cannot explain why this iron pillar has been standing in the open for more than 1,500 years and is still shiny and rust-free. Meanwhile, iron is a metal that rusts very easily, especially after a few decades.

Although it is now the age of technology, people have not yet found an effective method to prevent rusting of iron objects.

In theory, pure iron does not rust but is extremely difficult to smelt and is very expensive. However, according to some scientists’ analysis, the composition of the iron pillar contains many impurities and is not pure iron.

In the book on iron making of ancient Indians, there is not a single record about this issue, making the stainless iron pillar in India still an unsolved historical mystery.