In the low valley of Manzanares river, south of Madrid, is located the Butarque Complex Terrace
formed by piling up of alluvial deposits of the Upper Pleistocene. In Perales del Río they have been
excavated and picked up industries of the Middle Palaeolithic mainly in flint, in the sites of Los Estragales
1, 2 and 3, dated by TL and OSL between the Eemien (5e) and MIS 4. The terraces overlapped with the
Butarque Complex Terrace, at +11-12 m, +8m and La Gavia II, they have been deposited during the
Heinrich events H4, H2 and H1, of agreement with the luminiscence datings