Valli’s Cave also known as Dattatreya’s cave is one of the popular sites of Thiruchendur. It is located on the sea shore towards the northern part of the Thiruchendur Murugan Temple, below the sandstone cliff. It overlooks the sea and is a wondrous site. The cave houses two images of Lord Murugan’s consorts Valli and Dattatreya.
It has a stone mandapam which consists of 16 pillars which are about 24 and half feet long and 21 and half feet broad. Ancient carvings, images and paintings which depict the stories of Lord Murugan and Valli can also be found in the caves. The cave has been renovated recently with granite flooring and layout on the sea.