A rock-cut cave shrine at Pillayarpatti holding carvings of Ganesha, a Shiva lingam and a figure read as Ardhanarishvara or Harihara, attributed to about 650 CE and enlarged with mandapams in later centuries. It is one of the nine ancestral temples of the Nagarathar (Chettiar) community, and 11th-century panchaloha images were recovered during 19th-century restoration.