“…Similar in chronology or slightly later than Campo de Hockey, monumental graves are attested in the Tagus and Douro valleys: e.g. the stone cist at La Peña de La Abuela; the mound at Sima I, in the Ambrona valley 76 , 77 ; and, the dolmen of Azután in Toledo 78 , one of the earliest megaliths in the Iberian Peninsula, along with the foci found in Portugal 68 , 79 , Galicia and the Grupo de Tavernet 66 . Outside the Iberian Peninsula, closed stone chamber structures 66 are found in southern France and Northern Italy; parallels exist in Monte Revincu, Corsica 80 , which are similar to the protomegalithic constructions in Campo de Hockey.…”