Sporadic occupation in Armiña cave during the Upper Magdalenian: What for?

•Between 2016 and 2017 several tests and a 6 m2 excavation were performed in the main hall of Armiña cave.•The archaeological evidence suggests that the deposit is the result of a very short occupation event.•The morpho-topographic conditions imply that access from the exterior was difficult at the time of the occupation.•The activities carried out were not exclusively related to technological and subsistence practices, nor to the execution of art.