Such settlements were developed in inland oases and coastal areas, populated by farmers, animal herders and fisherman.[11] The first recorded large settlement was the town of Al Ain, through which inhabitants would export agricultural products through the port of Umm Al Nar, located off Abu Dhabi Island.[12] This was a permanent establishment made up of well-constructed buildings built from cut and dressed stone, complete with circular tower-like tombs. Evidence from these sites indicates a strong trade evolving from pottery production and the export of copper, particularly between these settlements and surrounding civilisations such as Mesopotamia.