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In this paper we focus on the regional/local scale of the archaeological record of the Central-West area of Chubut (Argentinean Patagonia) through the characterization of its regional taphonomy, considered from an archaeological perspective. We focus our research in the comparison of three different landscape situations: 1) a slope leading to highlands, 2) an azonal vegetal community (wetland or mallín ), and 3) a salt lake. Our main goal is to compare those situations, in order to determine the main taphonomic factors that regulate the archaeological material distribution in those locales. The ultimate goal is to address how past hunter–gatherers inhabited these landscapes. We depart from the assumption that distributions of artifacts are mainly explained by the action of post-depositional processes. To evaluate this assumption first we postulate a series of hypothesis and expectations for each locale, considering the main post-depositional agents present in them, and we evaluated if the patterns of material distributions can be explained by one or many of those processes. Only if explanation cannot be achieved by them, we recurred to human depositional activities. As a result we managed to explain most of the archaeological distributions in terms of post-depositional processes. Only in two cases we propose that human deposition occurred. [ABSTRACT FROM AUTHOR]