Many ancient Lord Siva temples from Kedarnath till Rameswaram with Kaleshwaram, Sri Kalahasti, Ekambareswar at Kancheepuram, Thillai Nataraja Temple at Chidambaram are aligned in a geographic straight line around 79° E 41’54” Longitude
Siva has five temples built, representing the manifestation of Linga in 5 elements of nature named as the Pancha Bhoota – Earth, Water, Fire, Air and Space.
The temple for water is in Thiruvanaikaval, fire is in Thiruvannamalai , air is in Kalahasti , earth is in Kanchipuram and The temple for space/sky is in Chidambaram.
Geographic Speciality : The five temples were built according to the yogic sciences, and are placed in a certain geographic alignment with each other, so that the entire region reverberated with the possibility they offered.
Kedarnath – Kedarnath Temple (30.7352° N, 79.0669)
Kaleshwaram – Kaleshwara Mukteeshwara swamy Temple (18.8110, 79.9067)
Srikalahati – Srikalahasti Temple (13.749802, 79.698410)
Kanchipuram – Ekambareswarar Temple (12.847604, 79.699798)
Thiruvanaikaval – Jambukeswara Temple (10.853383, 78.705455)
Tiruvannamalai – Annamalaiyar Temple (12.231942, 79.067694)
Chidambaram – Nataraja Temple (11.399596, 79.693559)
Rameswaram – Ramanathaswamy Temple(9.2881, 79.3174)
There must be many more temples between Kedarnath and Kaleshwaram, which might fall on same straight line.