A one-day fieldwork visiting several archaeological sites with palaeoflood deposits has been carried out. Guided by Jesús Jordá (UNED, Spain) and accompanied by Horacio Chiavazza (Universidad Nacional de Cuyo; Mendoza, Argentina), the MARCONI researchers visited the Jarama river sites (Jarama I and Jarama VI; Guadalajara), Pinilla del Valle (Madrid) and Abrigo del Molino (Segovia).