Perambalur is an administrative district in the state of Tamil Nadu, India. The major crops grown in the district are paddy, groundnut, sugarcane and millets. Cashew is the major plantation crop. Now the major cultivation is small Onion, totally 24% in Tamil Nadu Tourism in Perambalur DistrictTourism in Perambalur district offers a great opportunity to venture into the past history of the place by visiting the Ranjankudi Fort and the famous Sathanur Fossil Tree at Sathanur. There are also several temples in this district which are of great importance. Some of the well-known temples in this district include the Siruvachur Mathura Kaliaman Temple, the Chettikulam Thandayuthapani Swami Temple, etc. The Ranjankudi Fort is situated about seventeen kilometers to the north of Perambalur. It was erected by Jaginthar under the Nawab of Carnatic in the 17th century AD. The Fort was the scene of battle of Valikondah between Mohamed Ali and the British on one side and the French and Chanda Sahib on the other side in A.D. 1751. Presently the fort is under the protection of the Archaeological Survey of India. The petrified tree trunk found in Sathanur measures more than eighteen meters in length. Similar fossil trees a few meters in length are found along the stream sections near Anaipadi, Varagur, Saradamangalam and Alundalipur. This Fossil Tree is a prominent tourist site of the district of Perambalur. The ancient Arulmigu Ekambareswarar and Thandayudhapani Swamy Temples situated in Chettikulam village are among the reputed temples in this district. These temples were constructed by King Kulasekara Pandiyan some eight hundred years ago. The Thai Poosam festival and the Panguni Uthiram festivals are celebrated in a grand manner in this district. Another popular shrine in this district is the Mathura Kali Amman at Siruvachur. The main deity of this temple is called Sri. Madura Kali Amman who is one of the forms of Goddess Kali.