Abstract: Balma del Gai site is a small rock shelter situated in the municipality of Moià (Barcelona, Spain) at an altitude of 760 m above sea level and 50 km from the current coastline. The levels of occupation in this context are dated between 13,442 cal BP and 9,552 cal BP, being related to the so-denominated "Epimagdalenian" and "Microlaminar Sauveterroid" complexes. The excavations have provided important mollusc samples, both terrestrial and marine, which have been studied and considered alimentary and adornment resources. In this article, we present the results of the use-wear analyses of the shell tools of Mytilus galloprovincialis Lamarck, 1819 and Glycymeris glycymeris (Linnaeus, 1758). The results of these analyses and their comparison with analytical experimentation demonstrate that some of these shells were used as tools for developing diverse productive activities related to the processing of materials of animal, mineral and vegetal origin. In this way, this research contributes to: 1) broaden the technological spectrum registered in this context and in a wider sense for Epipalaeolithic hunter-gatherers (beyond the traditional technological elements), 2) demonstrate a diversified use of the shells as adornments, food and tools in the site; an aspect of great interest especially bearing in mind the distance from the coast.
