Subtitled 'use-wear analysis in some Final Upper Palaeolithic sites in the Basque country' this study discusses tool function using evidence from two sites in Northern Spain, Santa Catalina and Berniollo. Firstly the methodology used is clearly presented. Then the finds are categorised and their characteristics used to conjecture the action carried out with the tool and the material they were used to work on. Finally this information is used to discuss the assemblage of economic activities which took place in each settlement.