The Indus Valley Civilisation was a Bronze Age civilisation in the northwestern regions of South Asia, lasting from 3300 BCE to 1300 BCE. The Harappan civilization developed along the mighty river, Indus and for that reason it is also known as the Indus Valley Civilization. The term Harappan is also applied to the Indus Civilisation, after its type site Harappa, the first to be excavated early in the 20th century. The Harappan civilization is identified as a Bronze-age civilization because many objects have been found that are made up of copper based alloys. Many types of weapons made up of copper, stone and bone and rarely of bronze have been found from the excavated Late Harappan sites. These weapons are like spearheads, arrowheads, parasu, harpoon, macehead, daggers, sling balls. The weapons were used in war, for hunting and for self protection. This elongated, slender spearhead demonstrate the advanced metalworking skills of the Harappan people during the mature Harappan phase.