British colonists arrived in the area where the park is in the late 19th century. At this time, the Athi plains east and south of what is today Nairobi had plentiful wildlife.
Nomadic
Maasai lived and herded their cattle among the wildlife.
Kikuyu people farmed the forested highlands above Nairobi. As Nairobi grew—it had 14,000 residents by 1910—conflicts between humans and animals increased. Residents of the city carried guns at night to protect against lions. Animals were gradually confined to the expansive plains to the west and south of Nairobi, and the colonial government set this area aside as a
game reserve. Settlers from Nairobi including
Isak Dinesen, author of
Out of Africa, rode horses among
gazelles,
impala, and zebras in this reserve. he was alarmed to see that the amount of game animals on the Athi plains had dwindled. Expanding farms and livestock had taken the place of the game. He later recalled this place as a paradise that was quickly disappearing. At this time, the area that would later become Nairobi National Park was part of the Southern Game Reserve. Hunting was not permitted in the reserve, but nearly every other activity, including cattle grazing, dumping, and even bombing by the
Royal Air Force was allowed. Cowie started to campaign for the establishment of a national park system in Kenya. Cowie was named as director of Nairobi National Park and held this position until 1966. On 5 March 2024, a
Cessna 172 belonging to a flying school
crashed into the park after figuring in a
mid-air collision with a
Dash 8 passenger aircraft operated by
Safarilink Aviation, killing all two people aboard the Cessna. == Geography ==