Members of the Irula tribe, one of India&rsquos oldest indigenous groups, are furious at the recent destruction of their ancient rock art at Karikiyoor in Kil Kotagiri village, Tamilnadu. Apathetic trekkers have defaced the paintings&mdashan ancestral site for the tribals&mdashwith religious and political messages, etched out in chalk and whitener pens over 5,000-year-old imagery. Some couples have caused permanent damage by carving their names onto the rocks, further inflaming tensions.