This 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 on top. According to local people, this iron pillar was cast in memory of a king.

This 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 on top. According to local people, this iron pillar was cast in memory of a king.

Currently, 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 refine and very expensive.

However, according to some scientists’ analysis, the composition of iron pillars 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 pillars in India still an unsolved historical mystery.