There simply is no definitive source to tell us what they mean.
Archaeologists and cultural anthropologists have been able to determine the symbolism behind ancient symbols of so many other cultures, thanks to the written records they have found alongside the artifacts.
"From magnetic fields to vast galaxies swirling in space, spirals can be seen in every aspect in nature.
Prominently displayed on ancient artifacts dating long before the written word in Ireland, Celtic spirals are second only to knotwork designs as the symbols most associated with Celtic art.
Like so many other symbols associated with ancient Ireland, whatever meaning spirals had for the Druids remains an elusive mystery to us.
According to Kate Johnson at Arizona State University, an archaeologist conducted computer analysis in 1991 on the structure of some Celtic spirals found in ancient rock carvings.
He compared these spiral patterns with astronomical events that had occurred over the course of the last millennium. According to his research, the Celtic spirals were accurate representations of visible planetary configurations and the brightest fixed stars during total eclipses ages ago.
The true meaning of Celtic spirals is primarily speculation.