Eridu

Eridu was a foundational Sumerian city located in Lower Mesopotamia.

Today, the site sits at Tell Abu Shahrain in the Dhi Qar Governorate of Iraq. It is located near the modern city of Basra. According to the Sumerian King List, Eridu is traditionally considered the earliest city in southern Mesopotamia. The city was part of a group of Sumerian cities that grew around central temples. These cities were often built so close together that they were almost in sight of one another. Eridu served as a major religious and political center for many centuries.

The city's location was defined by its unique geography. Eridu sat on a natural hill within a large basin. This basin is known as the As Sulaybiyat Depression. During the rainy season, which lasts from November to April, the basin becomes a seasonal lake called a sebkha. This lake is filled by the discharge of the Wadi Khanega. A sandstone ridge called the Hazem separates the basin from the Euphrates River. In the 3rd Millennium BC, a canal named Id-edin-Eriduga connected the city directly to the Euphrates. This canal allowed for water transport and irrigation, though the river eventually shifted its course.

Religion was the central mechanism of life in Eridu. The city was believed to have been founded by the god Enki. Enki, who was later known as Ea, was the god of water. He was said to live in the Abzu, which is an aquifer where all life originates. Because of this connection to water, the main temple was named E-Abzu, or the "House of the Aquifer."

Another name for this temple was Esira. The city also honored Enki's consort, Damkina. Over many centuries, various rulers built or renovated these sacred spaces. For example, the Ur III ruler Ur-Nammu built a ziggurat, which is a massive stepped tower, over the remains of older temples.

Archaeological evidence shows that Eridu developed through several distinct stages. The city began during the Ubaid period on a virgin sand dune. During this time, the settlement covered about 12 hectares, or roughly 30 acres. As the city moved into the Uruk period, residents built more complex, non-secular buildings. In the Early Dynastic period, the city saw a massive increase in occupation. This era included the construction of a monumental palace. The site is organized into eight distinct mounds. Mound 1 contains the sacred area and the Enki temple. Mound 2 contains remnants of a city wall and an Early Dynastic palace. Other mounds, such as Mounds 3 through 7, hold various types of pottery from different eras.

History at Eridu is marked by many important people and discoveries. In 1855, John George Taylor first excavated the site and found inscribed bricks. Later, H. R. Hall discovered a piece of manufactured blue glass. This glass was made using cobalt and dates to the 21st century BC or earlier. It may be one of the earliest glass objects in the world.

Other significant finds include a terracotta boat model from the Ubaid period. This model even had a socket for a mast and a hole for a rudder.

Archaeologists also found twelve clay tokens, which were precursors to the cuneiform writing system.

The decline of Eridu provides important lessons about environmental management. Archaeologist A. Leo Oppenheim suggested that the southern region eventually faced stagnation. This was likely caused by increasing salinity in the soil. Salinity occurs when salt builds up in the ground, often due to continuous irrigation. This salt made it difficult to grow enough food to support the population. As a result, the political power shifted to northern cities. Eridu was eventually abandoned around 600 BC.

This shows how the success of early farming could eventually lead to land problems.

Today, Eridu remains a vital site for understanding human history. Since 2019, a joint effort by Italian, French, and Iraqi teams has resumed excavations. These researchers include experts from the University of Rome La Sapienza and the University of Strasbourg. They are using modern tools like photogrammetric mapping to create detailed maps of the site. They are currently focusing on the Ubaid period cemetery and residential areas. By studying these ancient layers, scientists learn how the first complex societies organized their governments and religions. Eridu connects our modern world to the very beginnings of urban life.