Wikipedia
Uthirakosamangai is a Shaiva temple situated near Ramanathapuram in the Ramanathapuram district of Tamil Nadu. The temple is believed to be built by the Panyda kings, Achutappa Nayak (1529–1542 A.D.), a Hindu ruler of Thanjavur, Muthuveerappar and other kings of Ramanthapuram district Sethupathy dynasty at various times.
The temple houses a tall ancient maragatha Nataraja idol carved out of emerald, being the one of its kind. The temple is considered sacred along the lines of Ramanathapuram, Sethu Madhava Theertham and Lakshmana Theertham. The temple has numerous shrines, with those of Mangalanathar, Mangalambigai and Natarajar being the most prominent. The temple has six daily rituals at various times from 5:30 a.m. to 8 p.m., and six yearly festivals on its calendar. The temple is maintained and administered by the Hindu Religious and Endowment Board of the Government of Tamil Nadu. The temple has been glorified by the hymns of 9th-century saint Manickavasagar and 15th-century saint Arunagirinathar.