Introduction to the Indus Valley Civilization • CrackTarget

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CRACKTARGET HARAPPAN ARCHIVES

2600 — 1900 BCE • MATURE HARAPPAN PHASE

THE INDUS VALLEY
CIVILIZATION

The world’s first truly planned urban civilization.
Advanced drainage. Standardized bricks. Maritime trade.
Undeciphered script. Timeless legacy.

1.5 MILLION SQ KM

1400+ SITES

𐤇𐤀𐤓𐤀𐤐𐤐𐤀

— THE UNICORN SEAL —

MOST COMMON SEAL MOTIF • STEATITE

From Sutkagen Dor to Alamgirpur

Grid planning • Standardized bricks (4:2:1)

Advanced covered drainage & 700+ wells

Maritime trade with Mesopotamia (Meluhha)

EXCAVATED • RECONSTRUCTED

City Structure Maps

Each major Harappan settlement followed a remarkably consistent yet locally adapted urban blueprint.

Click any building or feature
on the maps to highlight details

MOHENJO-DARO

Sindh, Pakistan • “Mound of the Dead”

CITADEL (WEST)

THE GREAT BATH

12×7m • Waterproofed • Ritual bathing?

Granary

6 rows × 2

LOWER TOWN (EAST)

House

Courtyard

House

Well

Workshop

House

Drain

Grid streets • Private wells • Covered drains

~300 hectares • Population ~40,000

Mohenjo-daro

The most spectacular and best-preserved city of the Indus Valley. Discovered in 1922 by R.D. Banerjee.

The Great Bath — Sophisticated waterproofing with bitumen. Likely used for ritual or public bathing. Steps on both sides.

700+ wells — Every third house had a private well. Extraordinary water management.

Dancing Girl (bronze) & Priest-King (steatite bust) discovered here.

UNESCO Tentative List

Advanced Civic Planning

DHOLAVIRA

Gujarat, India • UNESCO World Heritage (2021)

CITADEL

Administrative & elite quarter • Large reservoirs nearby

MIDDLE TOWN

Residential + craft workshops

LOWER TOWN

RESERVOIR

16+ rock-cut reservoirs • Sophisticated water conservation

Unique 3-part division

Dholavira

The most spectacular water management system of the ancient world. Located in the arid Rann of Kutch.

KEY INNOVATION

World’s earliest known water reservoirs system with channels, dams and stepwells integrated into urban planning.

• Famous signboard with 10 large Indus script characters (oldest signboard?)

• Three distinct zones separated by massive walls

• Stone architecture dominant (unlike baked brick elsewhere)

LOTHAL

Gujarat • Ancient Port City

DOCKYARD

World’s earliest known artificial dock • Tidal lock system

WAREHOUSE

Bead making factory • Shell & carnelian workshops

Lower Town — Grid streets, houses, drainage

Trade with Persian Gulf & Mesopotamia

Lothal was the maritime gateway. The dock (214×36m) could accommodate ships of 20-30 tons. Evidence of bead-making industry on industrial scale.

HARAPPA

Punjab, Pakistan • The Type Site

CITADEL

GRANARIES

Two rows of 6 granaries each • Massive storage capacity

LOWER TOWN

House blocks

Streets

Cemetery H

Cemetery H culture marks Late Harappan phase

First site discovered (1826)

Harappa gave the civilization its name. Famous for its massive granaries and the transition from Early to Mature phase. Cemetery H shows cultural shift in Late Harappan period.

Core Features of Harappan Urbanism

Grid Pattern Streets

Main streets ran North-South and East-West, intersecting at right angles. Main roads ~9-10m wide. Houses opened onto lanes, not main streets — remarkable civic discipline.

Covered Drainage

Every house connected to street drains via terracotta pipes. Drains had inspection holes and soak pits. One of the most advanced sanitation systems of the ancient world.

Standardized Bricks

Uniform ratio of 1:2:4 (thickness : width : length) across the civilization. Baked bricks used even in foundations. Shows strong central authority or shared technical knowledge.

Weights & Measures

Standardized cubical stone weights following a binary system (1, 2, 4, 8, 16, 32, 64). Used for trade across vast distances. Precision craftsmanship.

Long-Distance Trade

Evidence of trade with Mesopotamia (Meluhha), Oman, Iran, Afghanistan and Central Asia. Carnelian beads, cotton textiles, timber, ivory exported. Lothal and Dholavira were key ports.

Undeciphered Script

Over 400 distinct signs. Short inscriptions (average 5 characters). Found mostly on seals and pottery. Direction mostly right to left. Still one of archaeology’s greatest mysteries.

Sources for Reconstruction

Primary: Archaeological Sources
Structures, artifacts, seals, pottery, burials, tools. Since the script remains undeciphered, material remains are our only direct evidence.

Limited Literary Sources
Rigveda references (possibly “Hariyupiya” near Ravi river). Mesopotamian texts mention “Meluhha”. No contemporary indigenous texts.

Integration challenge: Archaeology gives us the “what”. Literary sources (later) give possible context but require careful corroboration.

The Decline

Gradual process between 1900–1300 BCE. No single catastrophic event.

• Shift in river courses (Ghaggar-Hakra / Sarasvati)

• Climate change & aridification

• Decline in long-distance trade

• Possible over-exploitation & salinization

• Internal socio-political factors

Aryan Invasion theory has been discarded by modern scholarship. Evidence points to peaceful de-urbanization and cultural transformation.

FOR UPSC • BPSC • EPFO • DRDO

Key Points for Quick Revision

Phases

Early (3300–2600 BCE) → Mature (2600–1900 BCE) → Late (1900–1300 BCE)

Major Sites

Mohenjo-daro, Harappa, Dholavira, Lothal, Kalibangan, Rakhigarhi, Chanhudaro

Town Planning

Grid pattern, Citadel + Lower Town, covered drains, standardized bricks, wells

Economy

Agriculture (wheat, barley, cotton), craft specialization, long-distance trade (Meluhha)

Decline Theories

River shift, climate change, trade collapse, internal factors (NOT Aryan invasion)

UPSC Focus

Compare town planning with contemporary civilizations. Significance of Great Bath & Dockyard. Why script remains undeciphered.

Introduction to the Indus Valley Civilization

City Structure Maps

Mohenjo-daro

Dholavira

Core Features of Harappan Urbanism

Grid Pattern Streets

Covered Drainage

Standardized Bricks

Weights & Measures

Long-Distance Trade

Undeciphered Script

Sources for Reconstruction

The Decline

Key Points for Quick Revision

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