The relationship between hunter-gatherer group mobility and lithic raw material procurement strategies is central to the study of Neanderthal productive behaviours. In this framework, determination of flint procurement sources through lithological analysis is key to infer Neanderthal group mobility patterns. El Salt rockshelter (Alcoi, Alacant, eastern Iberia) features different nearby flint sources, including primary outcrops and secondary deposits containing flint. In this study, we sourced the stratigraphic unit viii archaeological flint assemblage based on identification of geogenic and postgenetic lithological traits. Our results indicate that flint procurement at El Salt during the stratigraphic unit viii Neanderthal occupations was mainly linked to Pleistocene secondary deposits along the upper and middle courses of Serpis river. The artefacts were made predominantly on alluvially reworked nodules of different flint types. Connecting these procurement areas with their corresponding knapping products reveals a direct relationship between flint-source distance and degree of technical intervention, and defines a hypothetically unidirectional series of rivershore itineraries of procurement.

狩猎 - 采集者群体流动性与石器原材料采购策略之间的关系是研究尼安德特人生产行为的核心。在这个框架中，通过岩性分析确定燧石采购来源是推断尼安德特人群移动模式的关键。El Salt 避难所（Alcoi、Alacant、伊比利亚东部）具有不同的附近燧石来源，包括原生露头和含有燧石的次生矿床。在这项研究中，我们基于对成因和后成岩岩性特征的鉴定，采购了地层单元viii考古燧石组合。我们的结果表明，在地层单元viii期间，El Salt 的燧石采购尼安德特人的职业主要与塞尔皮斯河中上游沿线的更新世次生矿床有关。这些人工制品主要是在不同燧石类型的冲积返工结核上制成的。将这些采购区域与其相应的敲击产品联系起来，揭示了燧石源距离与技术干预程度之间的直接关系，并定义了一系列假设的单向河岸采购路线。