This is interesting its a fence made of bee hives that helps deter elephants from areas populated by humans. Biologist Dr Lucy King came up with the idea after studying the African Savannah elephant. She noticed that the elephants refused to feed on acacia trees which housed African honeybees for fear of getting stung. Based on this she developed the beehive fence to stop elephants entering farm land. The fences have now been tested in three different districts in Kenya. Since they have been installed a total of 90 different raids by elephants have been monitored but there have only been six incidents of elephants actually crossing the fences.