What is "nemeton"

A nemeton was a sacred space of ancient Celtic religion. Nemeta appear to have been primarily situated in natural areas, and, as they often utilized trees, they are often interpreted as sacred groves. However, other evidence suggests that the word implied a wider variety of ritual spaces, such as shrines and temples. Evidence for nemeta consists chiefly of inscriptions and place-names, which occur all across the Celtic world. Toponyms related to the word nemeton occur as far west as Galicia, Spain, as far north as Scotland, and as far east as central Turkey. The word is related to the name of the Nemetes tribe living by the Rhine between the Palatinate and Lake Constance in what is now Germany, and their goddess Nemetona.