The archaeological sites of the Ardabil Plain provide essential evidence for understanding the cultural sequences of northwestern Iran and its interactions with the Iranian Plateau, the South Caucasus, and eastern Anatolia. Among these sites, the mound of Qaleh Yeri–Kuraim is of particular significance. This paper presents the results of the first season of stratigraphic excavations conducted in 2023, based on two test trenches. Test Trench I (TTI) was opened to establish a comprehensive cultural sequence at the site, while Test Trench II (TTII) targeted deposits associated with the Transcaucasian/Kura Araxes Early Bronze Age horizon. The excavations revealed substantial archaeological evidence, including dry stone and mudbrick architectural remains, industrial installations such as kilns, metallurgical evidence, and extensive ceramic assemblages. In TTI, a long and well defined stratigraphic sequence of approximately 14.6 meters was documented, containing successive and occasionally alternating layers with Islamic, historical, and Bronze Age pottery. This sequence represents one of the most continuous stratigraphic records in the eastern sector of northwestern Iran. TTII yielded significant evidence of metallurgical activities, including furnace remains, slag, copper ore fragments, ceramic molds, and crucibles, indicating metal smelting, refining, and production during the Early Bronze Age. Eco-factual evidence, including animal remains (primarily sheep and cattle) and plant remains (notably wheat and barley), reflects a subsistence economy based on mixed farming and animal husbandry. Special finds such as obsidian tools, spindle whorls, grinding stones, bone implements, and clay figurines demonstrate a range of domestic, economic, and symbolic activities from the Bronze Age through the historical and Islamic periods. In the absence of absolute dating, the site’s chronology currently relies on relative dating and ceramic typology. The results indicate long term occupation interrupted by two major hiatuses, likely linked to tectonic, environmental, and historical changes.