The source of this geothermal spring which serves up the most delicious warm water is actually in the building "The Natural Baths" opposite. It is piped across. There are two types of spring water at the site, warm and cold, and there are about five springs in the area. The Celtic tribe, the Corieltauvi came here and honoured a Goddess known as Arnemetia at the site. The Goddess's name means "She Who Dwells Over the Sacred Grove" her name containing a variation of the Celtic word "nemeton" meaning sacred grove.