Bricks, Beads and Bones: The Harappan Civilisation
Introduction
Among the earliest and most remarkable urban cultures of the ancient world, the Harappan Civilisation (also called the Indus Valley Civilisation) flourished between approximately 2600 BCE and 1900 BCE across a vast region covering present-day Pakistan, north-western India, and parts of Afghanistan. Named after Harappa — one of the first sites excavated — this civilisation is renowned for its extraordinary town planning, standardised weights, craft production, and long-distance trade networks. Archaeologists continue to unravel its secrets, and many aspects, including the undeciphered script, remain mysteries.
Discovery and Geographical Spread
The civilisation was first identified in the 1920s when archaeologists John Marshall, Daya Ram Sahni, and R. D. Banerji excavated Harappa and Mohenjo-daro. Since then, over 1,500 sites have been identified. The two largest urban centres are:
- Harappa (in Punjab, present-day Pakistan)
- Mohenjo-daro (in Sindh, present-day Pakistan)
Other significant sites include Dholavira (Gujarat), Lothal (Gujarat), Kalibangan (Rajasthan), Rakhigarhi (Haryana), and Surkotada (Gujarat).
The civilisation's extent — roughly 1.5 million square kilometres — was larger than ancient Egypt or Mesopotamia, making it the most geographically spread early civilisation known.
Urban Planning and Architecture
One of the defining features of Harappan cities is their meticulous town planning:
- Cities were divided into two broad sections: a raised Citadel (western mound) used for public or administrative buildings, and a Lower Town (eastern mound) where most residents lived.
- Streets were laid in a grid pattern, intersecting at right angles, with main roads sometimes reaching up to 10 metres in width.
- Standardised baked bricks were used universally, with a consistent ratio of 1:2:4 (thickness : width : length). This uniformity across hundreds of kilometres suggests centralised planning or at least shared norms.
- A sophisticated underground drainage system ran beneath streets, with covered drains, inspection manholes, and soakpits — unparalleled in the ancient world.
At Mohenjo-daro, the Great Bath (approximately 12 m × 7 m × 2.4 m deep) is a remarkable structure lined with baked bricks sealed with bitumen, suggesting it served ritual or ceremonial cleansing functions. Nearby was a large building often interpreted as a granary or assembly hall.
Agriculture and Animal Husbandry
Harappans cultivated wheat, barley, lentils, peas, sesame, and possibly cotton — the earliest known cotton-growing culture in the world. Evidence from Kalibangan shows rows of furrows in a ploughed field, indicating systematic agriculture.
Animals domesticated included cattle, sheep, goats, buffalo, and dogs. The humped bull appears frequently on Harappan seals, suggesting its economic and possibly ritual importance. Camels and elephants may also have been used.
Craft Production and Trade
Harappan artisans were highly skilled:
- Beads were made from carnelian (a semi-precious red stone), lapis lazuli, gold, shell, and terracotta. Carnelian beads required multi-step drilling techniques, and finished beads have been found as far away as Mesopotamia.
- Seals — usually square, made of steatite (soapstone) — were carved with animal motifs (unicorn, bull, rhinoceros, tiger) and an undeciphered script. They were likely used to stamp goods for trade or identify ownership.
- Weights followed a binary and decimal system (1, 2, 4, 8, 16, 32 ...) and were remarkably uniform across sites, enabling standardised commerce.
- Pottery was wheel-made, often with geometric and floral designs in black on red.
- Metal work included copper and bronze tools (axes, knives, fishhooks), and the famous Dancing Girl bronze figurine found at Mohenjo-daro.
Long-distance trade linked Harappans with Mesopotamia (modern Iraq), the Persian Gulf, Afghanistan (source of lapis lazuli), and the Deccan peninsula. Lothal, with its dockyard, was likely a major maritime trade hub.
Script and Language
Harappan seals and tablets carry a script of approximately 400 signs. Despite numerous attempts, this script remains undeciphered. Most inscriptions are short (averaging 5 signs), which limits decipherment efforts. We therefore do not know the language spoken by the Harappans.
Religion and Belief
Archaeological evidence — figurines, seals, and ritual objects — offers clues:
- Female figurines (often called Mother Goddess figures) are found in large numbers, suggesting worship of a female deity.
- A seal from Mohenjo-daro shows a figure seated in a yogic posture surrounded by animals — sometimes called Proto-Shiva — suggesting early Shaivite or nature worship.
- Fire altars found at Kalibangan and Lothal may indicate ritual fire ceremonies.
- Sacred trees (pipal) appear on some seals.
Decline
By 1900 BCE, the mature Harappan phase declined. Theories for decline include:
- Climate change and drying of rivers (particularly the Ghaggar-Hakra, possibly the ancient Saraswati)
- Flooding or tectonic changes
- Over-exploitation of resources
- Aryan invasion (now largely rejected by archaeologists)
Most scholars today favour a gradual decline linked to environmental stress and changing trade patterns rather than a single catastrophic event.
Common mistakes
Students often assume the Harappan Civilisation was discovered recently or that we can fully read its script — neither is true. Also avoid calling it only the Indus Valley Civilisation; since many sites lie outside the Indus basin (e.g., Dholavira in Gujarat), the term Harappan Civilisation is more accurate. Do not confuse Mohenjo-daro (a city) with the civilisation as a whole; Harappa and many other cities were equally important.
Summary
The Harappan Civilisation was a bronze-age urban culture spanning c. 2600–1900 BCE across a vast region. Its achievements — grid-planned cities, uniform bricks, an advanced drainage system, standardised weights, long-distance trade, and fine crafts — place it among the greatest early civilisations. Despite rich archaeological evidence, its script remains undeciphered and its social and political organisation is still debated. The civilisation's gradual decline was likely driven by environmental changes.