Clearwell is also known as one of the few locations in the world where natural deep purple ochre, particularly caput mortuum is found.

A network of much deeper workings can be visited in the presence of an experienced guide and with appropriate caving equipment for safety.

The caves have been used as a Santa's Grotto at Christmas time for many years, for Easter egg hunts and in the summer barbecues, music concerts and theatrical performances.

One chamber is large enough to permit underground functions, including an annual Halloween Party hosting over 300 people.

Parts of the Doctor Who episodes "The Christmas Invasion" (2005), "The Satan Pit" (2006) and "Time of the Angels" / "Flesh and Stone" (2010) were filmed in the caves.