Over 500 stone age tools have been discovered in Tiruchi, Pudukottai, and Namakkal districts, Tamil Nadu, suggesting Lower and Middle Palaeolithic habitation.
Tools found include hand axes, cleavers, choppers, flakes, and multi-directional discoidal cores, mainly made of quartz.
Sites were identified in Kurumbappati, Kallikudi, Valkaradu, Veeramalai, Nadukattupatti, Mullipatti, Malampatti, Sarugumalai, Sitharmalai, and Thalaimalai.
Microlithic tools indicate a later prehistoric phase at these sites.