Eridu: Rebuilding Mudbrick Public Buildings

Eridu lies in present-day southern Iraq. During the Ubaid period, its inhabitants lived among low alluvial plains and wetlands, drawing resources from water, land and their margins. Fishing and food production contributed to subsistence, while mud and reeds supplied materials for buildings and everyday objects.

During excavations in 1946–1949, Iraqi archaeologists followed deposits beneath a public building and uncovered walls, floors and fills from repeated construction. The later excavation report arranged these remains by level, revealing the long use of a single location.

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Small structures in the deeper levels used rectangular mudbricks and contained brick pedestals. One also had a niche and a freestanding pedestal with traces of burning. Combining these fittings with later buildings, the excavators interpreted them as early ritual spaces. Their functions are inferred from the associated remains.

Rebuilding sometimes involved cutting down old walls and filling spaces with mudbricks and debris to form foundations. Buildings grew, side rooms were added around long halls, and platforms were altered. New structures continued the use of the site while changing activities inside and routes of entry.

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Later Ubaid buildings had a rectangular central hall flanked by smaller rooms. Wall projections reinforced mudbrick structures and shaped their facades. Side vestibules provided access to the hall; some phases also had entrances along its long axis.

Level VII preserved a plastered mudbrick stairway onto the platform. Pedestals, ash deposits and adjoining rooms arranged ritual activities within the building. Builders coordinated walls, platforms, doorways and floors, repeatedly maintaining materials vulnerable to damage.

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In the central hall of Level VI, abundant fish bones accompanied ash and burning traces on the pedestal, nearby floors and in a clay basin. Fish bones also covered floors in Level VII, and a spouted vessel in Level VIII contained them. These finds connect the public buildings with local aquatic resources.

The excavators interpreted the deposits as remains of offerings and suggested that some fish had been eaten or burned. Obtaining fish, bringing them into the building and disposing of remains linked wetland subsistence with communal ritual and left material connections between food and public space.

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Ubaid houses and a cemetery surrounded the public buildings. Burials lay near the settlement’s edge; many graves had sun-dried brick enclosures and pottery such as jars, dishes and cups. Mudbrick and pottery thus served domestic, ritual and funerary activities, linking different settings of life.

Eridu’s successive levels reveal gradual construction: small spaces were repaired and rebuilt, platforms and side rooms multiplied, and a shared location acquired more complex forms. Several elements used in later Mesopotamian public architecture have early examples within this sequence.

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