Maria de Jesus Sanches is an Associate Professor of Porto University, Portugal, with 39 years of experience in teaching and researching Prehistoric rock Art and Archaeology. PhD in Archaeology and Prehistory (1995) and Aggregation in prehistoric megalithic art (2006). She directed several archaeological research projects- rock art, funerary mounds and megalithic constructions, settlements,- in close relation with the respective paleo-ecosystems, particularly in the North of Portugal. She has authored more than a hundred papers, book chapters and five books in Prehistory.