This temple is situated at the banks of river Thenpenaiyaar, where much kora grass grew, the Tamil word for kora grass is sambu, hence the name Jambu and also there is an inherited old story that the elephant belonging to the king went there to dip itself in water, where it stumbled upon the Shivlinga, blood started oozing from the Shivlingam, hearing the call of the frightened elephant people started to gather and this incidence reached the ears of the king and then the temple was built.

In 2006, a beautifully carved 10th century A.D. Buddha sculpture was stolen from the middle of the fort area paddy field.

The hillock contains a cavern called Dasimadam where Tamizhi inscriptions dated to 1st century CE[3] is found.

The epigraph is in Tamil (except for the title in Prakrit) and reads "Satiyaputo Atiyan Nedumaan Anjji itta Paali".

[4] The meaning of the epigraph may be rendered as "The abode (pali) given by (itta) Atiyan Nedumaan Anji (name), the Satyaputra (title)".

Though the record is a short one in a single line, it throws valuable light on various aspects of South Indian history.

Tamil inscription of Kannaradeva or Krishna III, a Rashtrakuta king, found along with a relief work of Jyestha Devi.