Nemetona, also known as She of the Sacred Grove, is the Celtic goddess of power places, sacred grounds and circles, labyrinths, and medicine wheels. In ancient times, Celts never held sacred ceremonies indoors—they were always held in open-air settings. Nemetona watched over these gatherings in the way that an angel or master would watch over a church or temple today. Infused with ancient energy, she stands guard over power places, holding in the energy of the prayers invoked by people who visit these lands. Nemetona has overseen outdoor sacred rituals and ceremonies throughout time. Nemetona says, "When you pray in a sacred power place, you join in a simultaneous reality with ancient rituals being currently performed in a parallel dimension. Prayers for increased power, psychic abilities, and manifesting abilities join with ancient tribal dances and sacred-rite prayers."

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Nemetona's themes are wishes, protection, joy, fairies, magic, luck and nature, and her symbols are trees. Nemetona guards groves of trees with a special protective presence that marks the area as a sacred site. Within this space, the soul is hushed and calm, becoming one with nature and the energy of the Goddess.