Why in news?

• Prehistoric relics are discovered along the banks of three rivers flowing through Attappady hills in Kerala and Tamil Nadu.
• Attappady is a tribal block in Palakkad district of Kerala with hulas, Mudugas and Kurumbas as main tribes.
• The archaeological finds include- stone tools, inhabited caves, menhirs, cists or burial chambers, stone circles, burial urns, black and red ware pottery, terracotta images, stone carvings, and granite inscriptions.