ISBN 2-911285-28-XThis paper presents a study performed in the framework of an interdisciplinary project developed at the University of Corsica involving information technology researchers, anthropologists and people from the field of astronomy. In the first steps of the work which has to be done we have studied the link between megaliths and astronomy. In order to study the links between oral culture, megaliths and astronomy, we integrate modern information technology like GIS, database, GPS surveying, 3D mapping, statistical components and archeaoastronomy field survey. The paper is organized as follows : after a summary of a legend from the north Corsica oral culture, we describe the megaliths involved in the legend ; in a following part of the paper we present the orientations of the different surveyed structures. The fourth part deals with the astronomical analysis of the different sites of the legend. Finally the last part deals with the perspectives and draws some conclusion