Wikipedia
A khedda (or Kheddah) or the Khedda system was a stockade trap for the capture of a full herd of elephants that was used in India; other methods were also used to capture single elephants. The elephants were driven into the stockade by skilled mahouts mounted on domesticated elephants. This method was practiced widely in North-east India, particularly in the state of Assam, mostly in South India., and in particular in the erstwhile Mysore State (now part of Karnataka) state.
The khedda practice and other methods of trapping or capturing elephants have been discontinued since 1973 following the enactment of a law under Schedule I of the Wildlife Protection Act, 1972, declaring the Indian elephant as a highly endangered species. In the case of elephants which cause extensive damage by encroaching into human habitations and damaging crops, the forest department has the authority to capture them.