The Celtic spiritual tradition — the religion of the peoples of Iron Age Britain, Ireland, Gaul, and much of central Europe — is known through a complex mix of archaeological evidence, classical descriptions, and the medieval Irish and Welsh texts that recorded fragments of an originally oral tradition after Christianization. Its characteristic features include a permeable boundary between the natural and supernatural worlds, a reverence for the landscape and its sacred sites, a sophisticated class of ritual specialists known as Druids who served as priests, judges, poets, and keepers of collective memory, and a vision of time as cyclical and regenerative. Contemporary Druidry and Celtic paganism draw on these sources to reconstruct living spiritual practices centered on relationship with the natural world.
Each step builds on the last.