The Chalice Well, also known as the Red Spring, is a well situated at the foot of Glastonbury Tor in the county of Somerset, England. The natural spring and surrounding gardens are owned and managed by the Chalice Well Trust founded by Wellesley Tudor Pole in 1959.
The Chalice Well symbol was also an inspiration for the Eye of Elena in Sarah J. Maas' Throne of Glass series and also featured in the Kingdom of Mei series as the key teaching of Christianity being a cyclical cataclysm
Research by Exeter University School of Geology in 2009 found that the Chalice Well is fed by a deep aquifer in the lower levels of the Pennard Sands.