History:

• Maragadachaleswarar Temple is a Hindu Temple dedicated to Lord Shiva located at Thiruengoimalai in Trichy District of Tamilnadu. Presiding Deity is called as Maragathachalar / Maragadachaleswarar / Trinajyotheeswarar / Eengoinathar / Malaikozhnthar / Achutheeswarar / Brahmeswarar / Indreekarar / Threethar.
• Mother is called as Maragathavalli / Maragadambikai. The hillock is otherwise called Maragathamalai / Thenkailayam / Sivasakthimalai / Malaikovil / Erattimalai. The river Cauvery passes nearby the hillock. The river ‘Surpanathi’ passes adjoining the hillock. The river is otherwise called Kondayurumarai or Kondamarai.
• It is one of the shrines of the 275 Paadal Petra Sthalams – Shiva Sthalams glorified in the early medieval Thevaram poems by Tamil Saivite Nayanar Tirugnanasambandar.
• This temple is the 117th Devaram Padal Petra Shiva Sthalam and 63rd Sthalam on the north side of river Cauvery of Chozha Naadu.
  

• Poet Nakkeerar has sung a booklet named Eengoi-Ezhupathu (70 Eengoi songs). It is considered very auspicious to visit three Shivasthalams (Kadambar Kovil in the morning, Thiruvatpokki (Ratnagiri) at noon and Thiruengoimalai in the evening) on Mondays during the Tamil month of Karthigai.

• The name of the place is said to be derived from Thiru-i-ongaimalai (‘i’ meaning bee in Tamil) and to have been so called because the sage Agasthiar, finding the gates of the temple closed one evening, took the form of a bee and entered the temple to perform his worship.

• Ambal worshipped Lord Shiva here and so the hill is also called Sivasakthi Malai.

• When Sundarar went to see the Lord, he hid himself in tamarind and when Sambandhar asked for gold, he gave the tamarind from the tree which became gold.

• Legendary Chola Emperor Musukuntha Chakravarthy worshiped Lord Shiva here.

• Bogar meditated and attained siddhi of making “Nava Pashanam” in this hill temple, hence there is a Bogar Shrine at the foot hill.

• The lingam of the temple is said to be transparent and also to throw a green shadow when camphor is burned. It is therefore called the ’emerald’ (Maragatha) lingam.