President Mwai Kibaki (right) chats with Prime minister Raila Odinga (left) during the commissioning of the 400km Rhino Ark Aberdare fence at Bondeni in Kieni on March 12, 2010, by President Mwai Kibaki. The fence which took 21 years to construct encloses some 2000 square kilometers of indigenous forest and vital water catchment areas that also include the Aberdare National Park.