Severed heads like these were a unique funerary practice within the Iron Age Iberian world. For archaeologists and anthropologists, they offer a way to analyze these prehistoric communities. Most bodies were cremated at this time, so there is very little evidence of death rituals in the archaeological record.

An analysis of the origins of seven severed skulls with nails through them shows that some people treated this way in Iron Age Spain were local while others came from afar.