The Indus Valley Civilization spanned parts of modern-day Pakistan and northwest India from 3300 BCE to 1300 BCE. At its peak during the Mature Harappan period from 2600-1900 BCE, the civilization had trade networks connecting it as far as Mesopotamia in the west and parts of Central Asia. It featured large urban settlements built along major rivers, many with sophisticated water and drainage systems. While no conclusive evidence of religious structures has been found, some seals depict figures in poses resembling later Hindu deities like Shiva, and burial practices included both burial and cremation.