Fig. 1

Eastern Pampean Region map: archeological sites mentioned in the text: 1 Arroyo Seco 2 site; 2 El Guanaco 1 and 2 sites; 3 Paso Otero 5; 4 Campo Laborde; 5 La Moderna; 6 Los Helechos; 7 Cerro La China 1,2, and 3; 8 Cerro El Sombrero; 9 Cueva Tixi; 10 Burucuyá; 11 Los Pinos; 12 La Brava; 13 Cueva El Abra; 14 La Amalia; 15 Lobería 1. Limits of the studied area. Coast in the Late Pleistocene (ca. 12,000 14 C yrs BP; taken from Flegenheimer et al. 2007). Current coast