Metallurgical Treasure
This 1,600-year-old metallurgical treasure with a unique composition that’s kept it rust-free for centuries. Since the first analysis in 1912, researchers have found it contains 0.15% carbon, 0.25% phosphorus, 0.005% sulfur, 0.05% silicon, 0.02% nitrogen, 0.05% manganese, 0.03% copper, 0.05% nickel, and the rest is pure iron. Even today, scientists and visitors are amazed by this ancient engineering marvel that has stood the test of time!
Stage 3:
Dholavira reached its peak in this era, with the fortified wall expanded into a castle and a bailey added.
The creation of multipurpose grounds and the discovery of Indus Valley script on seals highlight the sophistication of the society.