Indus Civilization represents the earliest manifestation of urban development in the plains of the Indus valley and its extension along the Arabian sea-coast. The four chief settlements so far unearthed give the material to recreate the social substance of the human progress. Two lie in Pakistan: Harappa, normally related to Hariyupiya of the Rigveda, is arranged on an old bed (sukbrawa) of the waterway Ravi in Sahiwal District of Punjab, and Mohenjo-daro (truly 'hill of the dead') is on the correct bank of the Indus stream in Larkana District of Sind. The other two locales are in western India; Lothal is arranged on the Sabarmati waterway at the leader of the bay of Cambay on the west shore of India, and Kalibangan6 (truly 'dark bangles') lies somewhere in the range of 310 km north-west of Delhi along the left bank of the now-dry Ghaggar (old Sarasvati) stream in northern Rajasthan.