An 18-member overseas team visited historical Ketavaram rock paintings and rock formations here on Wednesday.
The team members hailing from different Asian and African countries were undergoing training at Central Institute for Rural Electrification at Hyderabad and planned to visit a site of tourism importance besides paying a visit to power plant at Pandipadu.
District Tourism Officer B. Venkateswarlu accompanied the team and explained the pre-historic significance of Ketavaram rock painting site.
The visitors were told that pre-historic people had Ketavaram rocks as their main dwelling place in the year around 5000 BC.
He showed to the visitors the rock paintings on the caves.
He said that was time for transformation from hunting era to settled agriculture. He explained the different figures drawn with acidic pen and their significance.