The Neolithic period is associated with a more or less simultaneous process in different parts of the planet that initiated the domestication of plants and animals and replaced almost completely the economies based on hunting and gathering by economies based primarily on agriculture and herding. In parallel, human groups settled permanently in villages or caves and developed a range of new technologies such as ceramic production.
After some initial phases where agriculture and herding was incipient and communities were small and scattered, peasant societies developed fully with larger settlements and a more complex social organization. This new phase is known as Middle Neolithic and begun in different moments depending on the processes that occurred throughout the world geography.
Between 4500 and 2500 BC, in northeastern Iberia, this period is identified generally by the existence of larger villages and characterized by a funerary ritual consisting to bury the dead in individual and, ocasionally, double pits with grave goods composed by highly processed objects or obtained through exchange networks. Often, these tombs have been found grouped together forming cemeteries close to the same places they inhabited.