As a matter of fact, the entire discovery of the Indus Valley Civilization (ICV) owes a lot to trains and tangents. Recent research indicates that ICV could be 8,000 years old, even older than initially thought of. A group of researchers in India have used carbon dating techniques on animal remains and pottery fragments to conclude that the Indus Valley settlements could be 8,000 years old—2,500 years older than previously dated. The following piece from ‘Live History India” is an apt example of the role of trains in the discovery of ICV.
The civilization was first officially identified in 1921-1922….. The first major IVC site to be officially identified was Harappa in 1921, followed by Mohenjo-Daro in 1922…” What happened, was that in 1856, the British were constructing a Railway line connecting the cities of Lahore and Karachi along the Indus River, when some of the workers discovered some ancient bricks. Not knowing their importance, they used them in their construction work. Among the bricks, they also found some stone seals, with very intricate markings, and almost forty years later, in 1861, the discovery along the railway lines in Harappa led to the formation of the Archeological Survey of India (ASI).”