Guntur district is home to prehistoric cultures that have interested archeologists across the world. A pathbreaking discovery of megalithic menhirs with rock engravings called petroglyphs, in an open field on the left bank of Nagaleru, a tributary of the Krishna river at Karampudi, 100 km from Guntur, has again brought the focus on the study of prehistoric civilisations.
The menhir is one of the significant remnants of the prehistoric megalithic civilisation, when humans used signs to communicate, and dates back to 1000-300 B.C. Menhirs throw light on the socio-ritualistic and ancestral beliefs. Archaeological evidence indicates that they were also used as places of worship.
