This temple has ten subterranean chambers.
While nine chambers are dedicated to the Rishis,with details about them,the tenth one has writings on them referring to MU.
It may be noted that MU is a prefix in Tamil which denotes antiquity.
The City of Madurai was called Mudur and it referred to old Madurai,Then Madurai which was located somewhere near Madagascar, then a part of Lemuria.
Also the capital of Chera Kings,Vanchi was called Vanchi Mudur which was located in Lemuria and it is not the present Karur ,Tamil Nadu.
Now to Churchward on Mu,Tamils and Kanchipuram Ekambareswara Temple.