NAIROBI, July 25, 2016 -- Lions rest on a rock in the Maasai Mara National Reserve, Kenya, July 24, 2016. The Maasai Mara National Reserve, popularly known as Africa's Greatest Wildlife Reserve, is a great tourist attraction center as it offers visitors an opportunity to watch the Africa's "big five": lion, leopard, elephant, buffalo, and rhino. (Xinhua/Pan Siwei)
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