This study examines the intra-site structure of two Late Mesolithic sites in southeast Lithuania: Gailiūnai 2 and Varėnė 2. Gailiūnai 2 presents a rare example of a single-period camp with a well-preserved spatial structure of discrete lithic scatters. In contrast, Varėnė 2 is a multi-period palimpsest site with mixed archaeological deposits but with documented Mesolithic features. Spatial analysis, characterisation and refitting of lithic artefacts as well as AMS 14C dating were carried out in order to identify the patterns in the internal organisation of both sites and define the nature of activities that resulted in the formation of their particular structure. The analyses have shown that three discrete lithic clusters at Gailiūnai 2 likely reflect remains of short-term task-specific encampments with the western cluster also displaying evidence of a surface dwelling. Refitting revealed prevalence of short reduction sequences and a technological organisation indicative of short-term stays. Varėnė 2 represents repeated, more substantial occupations involving habitation inside dugout dwellings as well as potential reuse of their pits as dumps. While individual lithic scatters are impossible to distinguish, three dugout structures with artefact-rich fills indicate more substantial habitation for longer periods. Radiocarbon dating has shown that dugouts were probably used between ca. 7170 and 4800 cal BC and in separate phases. The Late Mesolithic habitation at Varėnė 2 involved extensive usage of distinctive reddish-banded flint, which was used contemporaneously with the inhabitation and burial at one of the dugouts. The contrasting site structures highlight variability in Late Mesolithic settlement strategies. These results demonstrate the potential of unstratified sandy sites to reveal meaningful insights into lifeways of Stone Age hunter-gatherers in the southeast Baltic.

This study analyzes clay sources, ceramic paste recipes, and technological choices in Neolithic pottery from west Lithuania, where local hunter–fisher–gatherer groups encountered incoming communities of the Globular Amphora (GAC) and Corded Ware cultures (CWC) during the fourth to third millennium BCE. Thirty sherds from coastal Šventoji and the inland Biržulis region were analyzed by optical microscopy and SEM–EDS, revealing that most ceramic pastes comprise variegated hydromicaceous clay with quartz and feldspar. In Narva Culture pottery, vessels from the Biržulis region (Daktariškė 5) are dominated by fine-grained clay, whereas Šventoji examples are more variegated and diatom-bearing; both assemblages show organic inclusions (mussel shell, bone, charred plant material) and very low firing temperatures (<650 °C). GAC exhibits cross-site coherence, characterized by crushed, deformed, cataclastic muscovite granite in fine lacustrine clay and low firing temperatures (~650–750 °C). CWC from Daktariškė 5 geochemically clusters with Narva and hybrid-type pottery, while CWC at Šventoji aligns with GAC; both show low firing temperatures (~650–750 °C). Ceramic pastes contain argillaceous clasts partly diffused or intertwined with the main matrix; only a few show traits typical of grog. All pottery was made from local Quaternary glacial sediments, with cultural traditions and environmental context shaping clay selection and manipulation.