How was dholavira different from other most Indus cities

Dholavira is among one of the biggest cities of the Indus Valley Civilization. Presently Dholavira known as kotada timba, located in Gujarat contains the ruins of ancient civilization. The technique of rainwater harvesting was the unique feature of Dholavira which rarely found from any other site. Rock cut reservoirs located on the eastern and southern fortification is also the most important feature of Dholavira.