Indus Valley Civilisation: Sites, Town Planning and Decline
Complete GK notes on the Indus Valley Civilisation: its discovery, extent, major sites and finds, town planning, trade, seals, script, religion and decline.
By GK24 Editorial Team· Published · 5 min read

The Indus Valley Civilisation, also called the Harappan Civilisation, is the earliest urban civilisation of the Indian subcontinent and one of the three great Bronze Age civilisations of the ancient world, alongside Mesopotamia and Egypt. Examiners return to it every year because its facts are fixed and easy to test: which site gave which find, which river a city stood on, who excavated it and in which year. This note gives those facts in the order an exam asks for them.
Discovery, date and extent
The civilisation is named after Harappa, the first of its sites to be excavated. Daya Ram Sahni excavated Harappa in 1921 and R. D. Banerji reached Mohenjo-daro in 1922. Both worked under Sir John Marshall, then Director General of the Archaeological Survey of India, who announced the discovery to the world in 1924. The mature urban phase of the civilisation is placed between about 2600 BCE and 1900 BCE, with an early Harappan phase before it and a late, declining phase after it.
In area it was the largest of the Bronze Age civilisations. Its known limits are Sutkagendor in the west, on the Makran coast of Baluchistan; Alamgirpur in the east, on the Hindon in Uttar Pradesh; Manda in the north, on the Chenab in Jammu; and Daimabad in the south, on the Pravara in Maharashtra. Joined up, these outer sites form a rough triangle of well over a million square kilometres spread across present-day Pakistan and north-western India. The civilisation belongs to the Bronze Age: its people used copper, bronze, gold and silver, but knew no iron.
Major sites and what was found there
| Site | River or location | Famous finds |
|---|---|---|
| Harappa | Ravi, Punjab (Pakistan) | Rows of granaries, cemetery R-37, coffin burial, stone dancing figure |
| Mohenjo-daro | Indus, Sindh (Pakistan) | Great Bath, Great Granary, bronze Dancing Girl, Pashupati seal, bearded priest figure |
| Lothal | Bhogava, Gujarat | Dockyard, rice husk, fire altars, bead-making workshop |
| Kalibangan | Ghaggar, Rajasthan | Ploughed field, fire altars, camel bones |
| Dholavira | Khadir island, Kutch, Gujarat | Three-part town, stone water reservoirs, signboard of ten large signs |
| Rakhigarhi | Ghaggar plain, Haryana | Largest Harappan site in India |
| Chanhudaro | Sindh (Pakistan) | Bead and bangle making; the only major town with no citadel |
| Banawali | Haryana | Terracotta toy plough, barley grains |
| Surkotada | Kutch, Gujarat | Horse bones, stone-lined burials |
| Daimabad | Pravara, Maharashtra | Bronze chariot and animal figures; the southernmost site |
Town planning and drainage
The planning is the most examined feature of the civilisation, because it was the same in city after city.
- Towns were laid out on a grid, with streets crossing one another at right angles and dividing the settlement into rectangular blocks.
- A typical town had two parts: a raised citadel to the west, holding the public buildings, and a larger lower town to the east where people lived.
- Houses were built of burnt bricks of a fixed ratio of 4:2:1 in length, breadth and thickness, an early example of standardisation.
- Every street had a covered drain of brick with manholes at intervals for cleaning, and house drains fed into it. No other ancient civilisation matched this drainage system.
- The Great Bath at Mohenjo-daro, about twelve metres long and seven metres wide, was made watertight with a layer of natural tar, and was probably used for ritual bathing.
- The largest building at Mohenjo-daro is the Great Granary; Harappa has granaries close to its citadel.
Farming, crafts and trade
The Harappans grew wheat, barley, peas, sesame and mustard; rice husk has been found at Lothal and Rangpur in Gujarat. They were the first people in the world to grow cotton, which later Greeks called Sindon after the Indus. They kept humped cattle, buffaloes, sheep, goats, pigs and dogs, and knew the elephant and the camel; the horse is not an established part of Harappan life. Trade was carried on by barter, since no coins have been found, and weights and measures ran in multiples of sixteen. Sea and land trade linked the Harappans to Mesopotamia, whose records call the Indus region Meluha; Dilmun, identified with Bahrain, and Magan, identified with Oman, lay on the route. Lapis lazuli came from Afghanistan and the Harappan outpost of Shortughai, copper from Khetri in Rajasthan and gold from the Kolar region in the south.
Seals, script and religion
Seals, usually square and cut in steatite, are the signature object of the civilisation. The unicorn is the commonest figure on them; the best known is the Pashupati seal from Mohenjo-daro, showing a three-faced figure seated among animals, taken by many scholars as a proto-Shiva. The script is pictographic, has around four hundred signs, was written from right to left in the first line and left to right in the next, and remains undeciphered, which is why the civilisation counts as proto-historic. No temple has been identified. The people worshipped a mother goddess, the pipal tree and the humped bull, and buried their dead, usually extended and laid north to south.
Decline of the civilisation
The cities were abandoned by about 1900 BCE, and no single cause is accepted. Mortimer Wheeler argued for an Aryan invasion, reading the skeletons of Mohenjo-daro as evidence of a massacre, an explanation now largely rejected. John Marshall and Ernest Mackay pointed to repeated floods, and S. R. Rao to the same at Lothal. Others propose tectonic movement that dammed the rivers, the drying up of the Ghaggar-Hakra, growing aridity, deforestation caused by the enormous demand for fuel to bake bricks, and the failure of trade with Mesopotamia. Most historians now treat the end as a gradual decline in which climate and the shifting of rivers did the greater part.
Exam Point of View
Questions almost always test pairs: site and river, site and find, site and excavator. Learn Great Bath and Pashupati seal with Mohenjo-daro, dockyard and rice with Lothal, ploughed field and fire altars with Kalibangan, reservoirs with Dholavira, toy plough with Banawali, horse bones with Surkotada, bronze chariot with Daimabad. The favourite traps are the brick ratio 4:2:1 read as 1:2:4, the largest site in India (Rakhigarhi) confused with the largest site overall, iron being offered as a Harappan metal, and the four outermost sites being swapped between directions. A second group of questions asks what the Harappans did not have: iron, coins, temples, a deciphered script and an established use of the horse.
Important Facts
| Other name | Harappan Civilisation, after Harappa, the first site excavated |
|---|---|
| Excavation of Harappa | 1921, by Daya Ram Sahni |
| Excavation of Mohenjo-daro | 1922, by R. D. Banerji |
| Mature phase | About 2600 BCE to 1900 BCE |
| Westernmost site | Sutkagendor, Baluchistan, on the Makran coast |
| Easternmost site | Alamgirpur, Uttar Pradesh, on the Hindon |
| Northernmost site | Manda, Jammu, on the Chenab |
| Southernmost site | Daimabad, Maharashtra, on the Pravara |
| Brick ratio | 4:2:1 (length, breadth, thickness) |
| Great Bath | Mohenjo-daro, about 12 m by 7 m, sealed with natural tar |
| Dockyard | Lothal, Gujarat, on the Bhogava |
| Largest Harappan site in India | Rakhigarhi, Haryana |
| Mesopotamian name for the Indus region | Meluha |
| Metal not known | Iron |
| Script | Pictographic, undeciphered, written boustrophedon |
Practice MCQs on this topic
The Great Bath of the Indus Valley Civilisation was found at which site?
- A.Harappa
- B.Mohenjo-daro
- C.Lothal
- D.Kalibangan
Show answer
Correct answer: B. Mohenjo-daro
Explanation
The correct answer is B, Mohenjo-daro. The Great Bath stands in the citadel of Mohenjo-daro in Sindh. It is a brick tank about twelve metres long and seven metres wide, with flights of steps at two ends, small rooms around it and a layer of natural tar below the floor to stop water from seeping away. Scholars read it as a place of ritual bathing, which makes it the best known public building of the civilisation.
Option A, Harappa, is the site of the granaries and of cemetery R-37, not of the bath. Option C, Lothal in Gujarat, gave the dockyard, rice husk and a bead-making workshop. Option D, Kalibangan in Rajasthan, is remembered for its ploughed field and its row of fire altars. Each of these sites is tied to a different find, and the examiner is testing whether you can hold the pairs apart.
The only Harappan site with an artificial dockyard has been identified at which place?
- A.Lothal
- B.Surkotada
- C.Chanhudaro
- D.Banawali
Show answer
Correct answer: A. Lothal
Explanation
The correct answer is A, Lothal. Lothal lies on the Bhogava, a tributary of the Sabarmati in Gujarat, and its eastern side holds a large brick basin connected to the river by a channel. Most archaeologists read this as a dockyard where boats were brought in and loaded, which fits the bead-making workshop and the seals found at the site and marks Lothal as a port of the Harappan trade with the Gulf.
Option B, Surkotada in Kutch, is known instead for bones identified as those of the horse and for its stone-lined burials. Option C, Chanhudaro in Sindh, was a craft town making beads, bangles and seals, and is the only major Harappan town that has no citadel. Option D, Banawali in Haryana, gave a terracotta toy plough and stores of barley. None of these has a dock.
Harappa was excavated in 1921 by which archaeologist?
- A.R. D. Banerji
- B.Sir John Marshall
- C.Daya Ram Sahni
- D.Mortimer Wheeler
Show answer
Correct answer: C. Daya Ram Sahni
Explanation
The correct answer is C, Daya Ram Sahni. He dug at Harappa on the bank of the Ravi in 1921, and the finds from that season identified a wholly unknown urban culture, which was named after the site. Option A, R. D. Banerji, made the companion discovery a year later in 1922, when he excavated Mohenjo-daro on the Indus and found the same seals and bricks, proving that the culture was spread over a vast area.
Option B, Sir John Marshall, was Director General of the Archaeological Survey of India at the time. He directed the work of both men and announced the discovery to the world in 1924, but he did not himself open Harappa. Option D, Mortimer Wheeler, came much later, in the 1940s; he is remembered for the theory that invading Aryans destroyed the cities, an explanation now rejected by most historians.
Evidence of a ploughed field, the earliest in the subcontinent, was found at which Harappan site?
- A.Dholavira
- B.Kalibangan
- C.Rakhigarhi
- D.Alamgirpur
Show answer
Correct answer: B. Kalibangan
Explanation
The correct answer is B, Kalibangan. Kalibangan stands on the dry bed of the Ghaggar in the Hanumangarh district of Rajasthan. A field there, belonging to the pre-Harappan level, carries two sets of furrows crossing each other at right angles, showing that two crops were grown in the same plot at the same time. Kalibangan also gave a row of fire altars and bones of the camel.
Option A, Dholavira in Kutch, is known for its division into three parts and for the stone reservoirs that stored rainwater. Option C, Rakhigarhi in Haryana, is the largest Harappan site in India but is not associated with the ploughed field. Option D, Alamgirpur in Uttar Pradesh, marks the eastern limit of the civilisation. The examiner pairs a site with a single famous find, so learn them together.
Bricks used in Harappan houses were made in which fixed ratio of length, breadth and thickness?
- A.1:2:4
- B.2:2:1
- C.4:2:1
- D.3:2:1
Show answer
Correct answer: C. 4:2:1
Explanation
The correct answer is C, 4:2:1. A Harappan burnt brick was four units long, two units broad and one unit thick, and the same proportion turns up at sites hundreds of kilometres apart. This standardisation is one of the strongest arguments for a common authority or at least a shared set of rules across the civilisation, and it goes with the standard system of weights that runs in multiples of sixteen.
Option A, 1:2:4, is the same three numbers written backwards and is the commonest trap in this question; length is the largest of the three, so the ratio must begin with 4. Options B and D, 2:2:1 and 3:2:1, are simply wrong proportions and do not match any Harappan brick. Read the order of the words in the question stem carefully before choosing.
In Mesopotamian records, the Indus region was referred to by which name?
- A.Dilmun
- B.Magan
- C.Meluha
- D.Sindon
Show answer
Correct answer: C. Meluha
Explanation
The correct answer is C, Meluha. Mesopotamian texts list Meluha among the lands that sent ships carrying carnelian beads, ivory, timber and copper, and the goods named there match what Harappan sites produced. The trade was carried on by barter, since no Harappan coins have ever been found, and seals of Harappan type have turned up in Mesopotamia itself.
Option A, Dilmun, is identified with Bahrain and Option B, Magan, with Oman; both lay on the sea route between Mesopotamia and the Indus, and served as halting points rather than as names for India. Option D, Sindon, is not a Mesopotamian word at all: it is the later Greek name for cotton, taken from the Indus, and it recalls that the Harappans were the first people to grow the crop.
Which of the following metals was NOT known to the people of the Indus Valley Civilisation?
- A.Copper
- B.Iron
- C.Gold
- D.Silver
Show answer
Correct answer: B. Iron
Explanation
The correct answer is B, Iron. The Harappan Civilisation is a Bronze Age culture, and no iron object has been recovered from any of its levels. Iron comes into use in the subcontinent only in the later Vedic period, centuries after the cities were abandoned, which is why the word iron in a question of this kind is almost always the answer to a negative stem.
Option A, copper, was mined at Khetri in Rajasthan and used for tools, vessels and the famous bronze Dancing Girl, which is an alloy of copper and tin. Options C and D, gold and silver, were both worked into ornaments, and hoards of jewellery have been found at Harappa and Mohenjo-daro. Lead was known as well. Remember also what else the Harappans lacked: coins, temples and a script that can be read.
Daimabad, the southernmost site of the Harappan Civilisation, is located in which present-day state?
- A.Gujarat
- B.Rajasthan
- C.Maharashtra
- D.Haryana
Show answer
Correct answer: C. Maharashtra
Explanation
The correct answer is C, Maharashtra. Daimabad lies on the Pravara, a tributary of the Godavari, in the Ahmednagar district of Maharashtra, and it marks the southern limit of the Harappan world. The site is famous for a hoard of solid bronze figures, among them a chariot drawn by two oxen with a driver standing on it, along with a rhinoceros, an elephant and a buffalo.
Option A, Gujarat, holds Lothal, Dholavira, Surkotada and Rangpur, but none of them is the southernmost. Option B, Rajasthan, holds Kalibangan on the Ghaggar. Option D, Haryana, holds Rakhigarhi and Banawali. Learn the four outer sites as a set: Sutkagendor in the west on the Makran coast of Baluchistan, Alamgirpur in the east on the Hindon in Uttar Pradesh, Manda in the north on the Chenab in Jammu and Daimabad in the south on the Pravara in Maharashtra. Examiners often ask this set as a direction question, so fix the four names and their directions together.
The famous Pashupati seal, showing a seated figure surrounded by animals, was discovered at which site?
- A.Mohenjo-daro
- B.Chanhudaro
- C.Ropar
- D.Banawali
Show answer
Correct answer: A. Mohenjo-daro
Explanation
The correct answer is A, Mohenjo-daro. The seal shows a figure seated in a yogic posture with horns on its head and animals around it, usually described as an elephant, a tiger, a rhinoceros and a buffalo, with deer below the seat. Sir John Marshall identified the figure as a proto-Shiva or Pashupati, the lord of animals, and it is the single most quoted piece of evidence for Harappan religion.
Option B, Chanhudaro, was a craft settlement that made beads and bangles and is remembered as the only large town without a citadel. Option C, Ropar in Punjab, gave a burial in which a dog was laid with its master. Option D, Banawali in Haryana, gave a terracotta toy plough. Seals in general were cut in steatite and most often carry the figure of a one-horned animal called the unicorn.
Which Harappan site in Gujarat is divided into three parts and is known for its large stone water reservoirs?
- A.Lothal
- B.Dholavira
- C.Rangpur
- D.Surkotada
Show answer
Correct answer: B. Dholavira
Explanation
The correct answer is B, Dholavira. Dholavira stands on Khadir island in the Rann of Kutch. Unlike the usual two-part Harappan town, it is divided into three: a citadel, a middle town and a lower town, all enclosed by stone walls. Its people cut a chain of large reservoirs into the rock to store the rain and the water of two seasonal streams, and a board of ten large signs, the longest Harappan inscription, was found at one of its gates.
Option A, Lothal, is the port with the dockyard. Option C, Rangpur, is a smaller Gujarat site that gave rice husk from a late level. Option D, Surkotada, gave the disputed horse bones. Dholavira was inscribed on the UNESCO World Heritage List in 2021, a fact that has since become popular with examiners.
Which statement about the script of the Indus Valley Civilisation is correct?
- A.It was alphabetic and has been fully deciphered
- B.It was pictographic, written boustrophedon, and remains undeciphered
- C.It was written only from left to right in Brahmi letters
- D.It was borrowed unchanged from Mesopotamian cuneiform
Show answer
Correct answer: B. It was pictographic, written boustrophedon, and remains undeciphered
Explanation
The correct answer is B. The Harappan script uses about four hundred picture-like signs, and it was written in the boustrophedon style, that is from right to left in the first line and then from left to right in the next, turning like an ox ploughing a field. Since the inscriptions are very short and no bilingual text exists, no reading has been accepted, and the civilisation is therefore called proto-historic.
Option A is wrong on both counts: the signs are far too many for an alphabet and no decipherment has been agreed. Option C names Brahmi, a much later script of the historical period, first read from the inscriptions of Ashoka. Option D is wrong because the Harappans traded with Mesopotamia but wrote in a script of their own, quite unlike cuneiform, which was pressed into clay with a wedge-shaped stylus.
Frequently Asked Questions
Why is the Indus Valley Civilisation also called the Harappan Civilisation?
Archaeologists name a culture after the first site where it was identified. Harappa on the Ravi was excavated in 1921, before Mohenjo-daro, so the whole culture carries its name. The wider name is also more accurate, because many of its sites, such as Lothal, Dholavira and Rakhigarhi, lie far from the Indus itself.
Which is the largest Harappan site in India?
Rakhigarhi in the Hisar district of Haryana. Dholavira in Kutch is the other very large Indian site and is known for its three-part plan and its stone water reservoirs. Mohenjo-daro and Harappa, the two best known cities, lie in present-day Pakistan.
Did the Harappans know the use of iron?
No. The Harappan Civilisation belongs to the Bronze Age. Its people worked copper, bronze, gold, silver and lead, and made tools, vessels, ornaments and figures from them, but iron was unknown to them. Iron appears in the subcontinent only in the later Vedic period, several centuries after the Harappan cities were abandoned.
What is the Great Bath and where was it found?
The Great Bath is a large brick tank in the citadel of Mohenjo-daro, about twelve metres long, seven metres wide and two and a half metres deep, with steps at two ends and a layer of natural tar to keep it watertight. It had changing rooms around it and was almost certainly used for ritual bathing rather than for ordinary washing.
Why has the Harappan script not been read?
The script is pictographic, has about four hundred signs, and survives only in very short inscriptions, most of them a few signs on a seal. There is no bilingual inscription of the kind that unlocked Egyptian hieroglyphs, and the language behind the signs is unknown. Because its writing cannot be read, the civilisation is called proto-historic rather than historic.
Sources
- Themes in Indian History Part I (Class XII), Chapter 1: Bricks, Beads and Bones — NCERT
- Our Pasts I (Class VI), Chapter on the earliest cities — NCERT