The City of Dholavira located in Khadir island of the Rann of Kutch belonged to Harappan Civilization. Today what is seen as a fortified quadrangular city set in harsh arid land, was once a thriving metropolis for 1200 years (3000 BCE-1800 BCE) and had an access to the sea prior to decrease in sea level.
This 47 ha quadrangular city lay between two seasonal streams, the Mansar in the north and Manhar in the south, and had three distinct zones-the Upper, Middle and Lower Towns and shows the use of a specific proportion, considering the basic unit of measurement as 1 dhanus equivalent to 1.9 meters. First, the citadel, consisting of enclosures identified as a castle and a bailey (by excavators), having massive mud-brick walls flanked by dressed stones. To the north of the citadel was the quadrangular middle town having an area identified as the ceremonial ground or stadia. The latter served as a transition from the citadel to the middle and was accessed from the citadel through a grand gateway on its northern wall. Measuring 283 meters in length and 47.5 meters in width, the stadia had four narrow terraces possibly as seating arrangement. The middle town was characterised by a network of streets with defined hierarchy, intersecting at perfect angles. Beyond the middle town and enclosing it and the citadel was the lower town where commoners or the working population lived.
Dholavira show large scale use of dressed stone in construction. Few rooms have been found to have been built of dressed stone and in some cases show segments of highly polished stone pillars of square or circular section having a central hole. To create a pillar, such segments were piled to attain requisite height and a wooden pole was inserted to ensure stability. This method of constructing a column was an ingenious alternative to a monolithic column.
Water conservation of Dholavira speaks volume of the ingenuity of the people who developed a system based on rainwater harvesting to support life in a parched landscape, with scanty sweet water. Relying partly on rain-water and little from the ground a complex water system comprising of large rock-cut reservoirs, located at the eastern and southern fortification and rock-cut wells were developed. Huge stone drains can be seen in the city the directed storm water to the western and northern section of the lower town separated by broad bunds, creating in-effect a series of reservoirs. The most imposing well was located in the castle and is possibly the earliest example of a rock cut well. The city also drew water from the seasonal streams flowing on the northern and southern faces of the fortification. The water from these streams was slowed by a series of dams and partly channelized water into the lower town. Every drop of water was conserved to ensure survival.
Among antiquities recovered during excavation, an inscription measuring 3 meters long had been recovered from the chamber near the northern gate of the castle. Though its content is yet to be deciphered but based on the size of the incised letters, its conspicuous location and visibility, it has been identified as a sign-board. This is an exceptional find unlike any other sites, also suggesting that common people were versed in letters.
No one theory can explain the eventual abandonment of Dholavira. The urban order gradually ruralised and the eastward shift of habitation at a period of time when geo-climatic conditions challenged life in Khadir Island. The site seen today is the partly excavated area of a settlement abandoned for more than four millennia.
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