athuragiri Hills(Tamil: சதுரகிரி) or Chathuragiri otherwise known as ' SUNDARA MAHALINGAM ' is situated 10 km from Watrap (Wathirairuppu) near Srivilliputhur. The name Sathuragiri came from Chathur (4) Veda (Vedas) Giri (Hill), where all the four Vedas met and formed the hill. Another meaning is that the whole mountain is in square (Chathuram) in shape so the name Chathuragiri. Sathuragiri is the Abode of God. It is otherwise also called as Mahalingam Hill. This is also called as "Siddargal boomi". 18 Siddhas were said to live here. This is a mysterious hill where it is believed that Siddhars still worship the lord Shiva.