Reflecting pool at Bath, a Roman spa erected to take advantage of the natural hot springs.  These springs had always been regarded as healing and sacred; the Celtic name for the Goddess of the site was Sul or Sulis..  The Romans dedicated the spa to their own Goddess of health, Minerva; to communicate with the local inhabitants, they referred to the Goddess as Sulis-Minerva.

This dark orifice emits the steaming hot water.  It is located deep below the pools, in a cave-like area. Sacred waters such as this are ofen associated with the Goddess.  

Sulis-Minerva was connected with fertility, health and prophecy, and also with the flowing of spring water, especially water in hot springs.