There were many types of coins and people who lived in villages, including Uzhavar, Kadaisiar and Adimai, and Gramabhojaka. Mathura has been an important settlement for over 2,500 years. Archaeological evidence also shows various crafts practiced in the area, such as fine pottery known as northern black polished ware found in northern parts of the subcontinent. Between 2,200 and 1,900 years ago, Arikamedu was a coastal settlement where ships unloaded goods, and a large brick warehouse structure was found there.