The Harappan or Indus Valley civilization was a Bronze Age urban culture that flourished in north-west South Asia, with its mature phase dated to roughly 2600 to 1900 BCE. Its well-planned cities, drainage, standard weights and undeciphered script make it one of the world’s earliest urban societies. It was first recognised through excavations at Harappa and Mohenjo-daro in the 1920s.
Quick facts
| Item | Detail |
|---|---|
| Also called | Indus Valley Civilization, Indus-Sarasvati or Harappan culture |
| Mature phase | c. 2600 to 1900 BCE (dates vary slightly by scholar) |
| Early excavations | Harappa (1921, Daya Ram Sahni) and Mohenjo-daro (1922, R. D. Banerji) |
| Major sites | Harappa, Mohenjo-daro, Dholavira, Lothal, Kalibangan, Rakhigarhi, Ganweriwala |
| Script | Not yet deciphered |
| UNESCO | Dholavira inscribed in 2021 |
How was it discovered?
Railway workers building the Lahore-Multan line in the 19th century used bricks from mounds near Harappa, unaware that they came from an ancient city. Alexander Cunningham noted a seal there, but its importance was missed. In 1921 Daya Ram Sahni of the Archaeological Survey of India began digging at Harappa, and in 1922 R. D. Banerji began at Mohenjo-daro in Sindh. John Marshall, the Director General of ASI, announced the finds in 1924, showing that a previously unknown civilization had existed.
How big was it?
The civilization spread across an area bigger than Egypt or Mesopotamia, covering parts of present Pakistan, north-western and western India, and eastern Afghanistan. More than a thousand sites are known. In India, key sites include Dholavira in Gujarat, Lothal in Gujarat, Kalibangan in Rajasthan, Rakhigarhi in Haryana and Banawali. Rakhigarhi is often described as among the largest sites, though comparisons depend on how area is measured.
Town planning
The cities show clear planning. Streets were laid out in a grid, houses were made of standard-sized baked bricks, and many homes had private wells and bathrooms. Covered drains ran along the streets and connected to larger sewers, which is why the civilization is remembered for its drainage. Cities were often divided into a raised citadel and a lower town.
At Mohenjo-daro, the Great Bath is a large brick-lined tank with steps, thought to have had a ritual role. At Dholavira, the town was organised into several parts and had a sophisticated system of reservoirs to store water in a dry region. At Lothal, a structure long described as a dockyard suggests trade links, though some scholars question whether it was a dock or a water tank.
Economy and trade
Most people farmed wheat, barley, peas and sesame, and kept cattle, sheep and goats. Cotton was grown, and it is among the earliest evidence of cotton cloth. Craftspeople made beads from carnelian and shell, copper and bronze tools, pottery and terracotta figures. Standardised weights and measures suggest regulated trade. Seals with Harappan signs have been found in Mesopotamia, and Mesopotamian texts mention a land called Meluhha, which many scholars identify with the Indus region.
Seals and the script
Thousands of small stone seals, often square and made of steatite, carry animal motifs such as the unicorn-like bull, together with short strings of signs. The inscriptions are usually only a few signs long, and no bilingual text has been found. Despite many claims, the script remains undeciphered, so we do not know what language the Harappans spoke. Anyone claiming a full decipherment should be treated with caution.
Religion and society
Because we cannot read the script, ideas about religion are based on objects. Terracotta female figurines are sometimes interpreted as linked to a mother goddess. A seal showing a figure seated in a yogic posture, called the Pashupati seal, has been widely discussed, but its interpretation is debated. There is no clear evidence of grand temples or royal palaces, and the relative lack of weapons has led some to suggest a different kind of political organisation than in other early civilizations, though this is still debated.
What happened to the civilization?
From around 1900 BCE the big cities declined. The older idea that Aryan invaders destroyed them has been largely abandoned by scholars, since there is no evidence of large-scale warfare at the sites. Current research points to a mix of causes: a weakening monsoon and increasing aridity, changes in river courses including the drying of the Ghaggar-Hakra system, and a shift in trade. People did not vanish; many seem to have moved toward the east and south, into smaller villages, so the decline looks more like gradual change than sudden collapse.
Why it matters for students
For exams and general knowledge, remember these points: it is called Harappan after the first discovered site; it belongs to the Bronze Age; it had planned cities; and its script remains unread. Also remember that the main theory about its end is climatic and economic change.
Visiting Harappan sites in India
Dholavira in the Rann of Kutch, Lothal near Ahmedabad and Kalibangan in Rajasthan can be visited. Facilities and timings vary, so check ASI or state tourism pages before you travel. Mohenjo-daro and Harappa are in Pakistan.
Phases of the civilization
Archaeologists usually divide the Harappan story into three broad phases. The Early Harappan phase, from about 3300 to 2600 BCE, shows villages and early towns developing. The Mature phase, about 2600 to 1900 BCE, is the period of big cities. The Late Harappan phase, after 1900 BCE, shows the decline of cities and a spread of regional cultures. Dates vary slightly in different books, so use the version in your syllabus for exams.
Famous finds
The bronze figure called the Dancing Girl and the sculpture known as the Priest-King come from Mohenjo-daro. Terracotta carts, toys, dice and a large number of beads show everyday life. At Dholavira a large signboard with ten big letters of the Harappan script was found, which is one of the longest inscriptions of the culture. Weights were in a simple binary and decimal system, which suggests organised trade.
Conclusion
The Harappan civilization reminds us that urban life in South Asia is more than 4,500 years old. We still have more questions than answers, particularly about its language and its decline, but every new excavation adds a little to the picture.
Frequently Asked Questions (FAQ)
Why is it called the Harappan civilization?
Because Harappa was the first site of this culture to be excavated, in 1921.
Who discovered the Indus Valley Civilization?
Daya Ram Sahni began excavations at Harappa in 1921 and R. D. Banerji at Mohenjo-daro in 1922. John Marshall announced the discovery in 1924.
Has the Harappan script been deciphered?
No. Despite many attempts, the script remains undeciphered.
Why did the Harappan civilization decline?
Scholars point to climate change, river shifts and changes in trade, rather than invasion. The exact causes are still debated.
Is Dholavira a UNESCO World Heritage Site?
Yes, Dholavira was inscribed in 2021.
