Response to Emily Hammer’s article: “Multi-centric, Marsh-based urbanism at the early Mesopotamian city of Lagash (Tell al Hiba, Iraq)”

Remote-sensing techniques play an important role in the resumption of archaeological research in southern Iraq. These tools are especially powerful when ground-truthed through excavation and survey, and when informed by local environmental histories. This response engages with propositions put forward by Hammer (2022): “Multi-centric, Marsh-based urbanism at the early Mesopotamian city of Lagash (Tell al-Hiba).” Using a mix of UAV photography and magnetic gradiometry data, Hammer argues that Lagash was a marsh-based city toward the end of the Early Dynastic period in Mesopotamia (c. 2,900-2,292 BCE), and that on-site habitation had previously been restricted to points of high elevation because of excess water. Fundamental geoarchaeological and chronometric data, however, are absent. Based on evidence from previous excavations and general conditions of site preservation, we review Hammer’s interpretations, including the validity and reliability of the data that the paper uses to advance its arguments. Ongoing work at that site has the potential substantially to enhance our understanding of ancient urbanism. Ultimately, this response seeks to rectify basic principles of chronology, taphonomy, and paleoenvironment at Lagash, and to highlight the importance of verifiable representation in the presentation of remotely-sensed datasets.