Aberdare National Park is the most climatically dramatic stop on the Kenya safari circuit. In a single day you can move from dense montane forest to open moorland above 3,000 metres, spend the night above a floodlit waterhole in one of Africa’s original tree-hotels, and stand a real chance of seeing a black rhino, a giant forest hog, and a critically endangered mountain bongo. Few Kenya parks pack this much altitude and animal diversity into one circuit. Explore our Kenya safaris to see how Aberdare fits into a wider itinerary.
Key Highlights
- 766 square kilometres, 100 to 150 km north of Nairobi, ranging from 2,000 to 4,001 metres altitude
- Ol Donyo Lesatima (4,001m) is the park’s highest point and Kenya’s third-highest peak, after Mount Kenya (5,199m) and Mount Elgon (4,321m)
- Treetops Lodge is where Princess Elizabeth became Queen Elizabeth II overnight on 6 February 1952
- Home to Kenya’s highest-density giant forest hog population and the critically endangered mountain bongo
- Best visited as a 2 to 3 night stay, often combined with Ol Pejeta Conservancy
- A 400km electric fence completed in 2009 cut human-wildlife conflict at the park boundary by 90%
Where Aberdare Sits and What Makes It Different
Aberdare National Park covers 766 square kilometres of the Nyandarua Range (formerly the Aberdare Range) in central Kenya, about 100 to 150 kilometres north of Nairobi. It is a park defined by altitude: the terrain climbs from 2,000 metres at the forest edge to 4,001 metres at Ol Donyo Lesatima, the “hill of the calf” in Maasai and Kenya’s third-highest summit.
That altitude range creates three distinct habitats. Afromontane forest covers the lower slopes between 2,000 and 3,000 metres. Above that, a transitional Hagenia-Hypericum woodland runs to about 3,400 metres. Higher still, above 3,000 metres, the forest gives way to open Afro-alpine moorland — a landscape of giant heather shrubs reaching 5 to 8 metres, red-hot poker plants, giant lobelia growing as tall columns of 3 to 6 metres, and wind-blown tussock grass. No other park on the main Kenya safari circuit offers this kind of moorland scenery.
The park is split into two very different experiences. The lower Salient, between 2,000 and 2,400 metres, is enclosed by a 400-kilometre electric fence completed in 2009 that separates wildlife from the surrounding farmland — a measure that cut elephant crop-raiding at the boundary by roughly 90%. This is where Treetops and The Ark, the park’s famous waterhole lodges, are found. The Moorland, reached via the Wandare or Kiandongoro gates, is the open high-altitude section where the mountain bongo roams.
Treetops and the Ark: The Original Tree-Hotel Experience
Treetops Lodge invented the concept of the African tree-hotel. It began in 1932 as a simple two-room platform built into a large fig tree overlooking a saltlick and waterhole on the Chania River. A fire destroyed the original structure in 1954, and the lodge was rebuilt in 1957 as the four-storey elevated walkway that stands today, with room for 50 guests overlooking the waterhole.
Treetops owes much of its fame to a single night in 1952. Princess Elizabeth and Prince Philip arrived at the lodge on the evening of 5 February as heir to the British throne. Overnight, her father King George VI died, and she left the following morning as Queen Elizabeth II. The line often quoted from that visit — “she went up a tree a princess and came down a queen” — has appeared in the lodge’s own promotional material ever since.
The waterhole itself is the real draw. Camera traps at the waterhole typically record an average of 18 elephants and 65 buffalo per 24 hours, along with 35 to 55 waterbuck, 12 to 25 bushbuck, and 8 to 15 giant forest hogs. Rarer visitors included 4 to 6 black rhino sightings (the Salient holds an estimated 8 to 12 individuals), 1 to 3 leopard sightings, 2 to 5 spotted hyena, and 1 to 2 serval. Guests who stay three nights have an 85 to 95% chance of seeing the black rhino, the giant forest hog, and the leopard — the three species Aberdare is best known for.
A short drive away, The Ark offers a similar experience over a different saltlick, the Tusk waterhole. Built in the shape of Noah’s Ark and holding 61 rooms, it draws the same elephant, buffalo, and giant forest hog traffic — plus the best bongo sightings of any lodge in Kenya, with forest bongo visiting the waterhole on 1 to 3 nights during a typical 4-night stay.
Giant Forest Hog: Africa’s Largest Pig
Aberdare is the best place in Africa to see the giant forest hog (Hylochoerus meinertzhageni), the largest member of the pig family on the continent. Adult males weigh 175 to 275 kilograms and reach 1.8 to 2.1 metres in body length — 50 to 85% heavier than the next-largest African pig, the common warthog. The species is named for Colonel Richard Meinertzhagen, the British colonial officer who sent the first specimen to the British Museum from the Aberdare Forest in 1904, making this park the species’ type locality.
The hog thrives here because Aberdare’s habitat is close to ideal: bamboo forest, Hagenia-Hypericum woodland, and the transition zone between forest and moorland between 2,000 and 3,200 metres altitude give it both the grass and sedge it feeds on and the forest cover it needs to escape predators. Camera-trap counts at the waterholes, extrapolated across the Salient, suggest a population of 400 to 600 animals — the highest density anywhere in Kenya.
Giant forest hogs live in family groups called sounders, typically 2 to 8 animals made up of a dominant boar and sow, that year’s piglets (1 to 6 per litter), and sub-adults from the previous year that stay with the group until they disperse at 18 to 24 months. Sounders are mostly nocturnal and crepuscular, approaching waterholes between 7pm and 11pm — exactly the window Treetops’ infrared-lit viewing platform is built to cover, with guests able to watch continuously from 6pm to 6am.
The Moorland and the Mountain Bongo
Above 3,000 metres, a 4WD track from the Kiandongoro or Wandare gates opens onto the Aberdare moorland — open, wind-swept country that looks nothing like the savanna most visitors associate with Kenya. This is one of the last strongholds of the mountain bongo (Tragelaphus eurycerus isaaci), a critically endangered antelope subspecies with only 130 to 140 individuals left in the wild. Aberdare is the most accessible place in Kenya to look for one, with dawn and dusk drives along the moorland track giving roughly a 30 to 50% chance of a sighting.
The moorland is also worth the drive for its own sake. Giant lobelia and giant heather give the landscape an almost otherworldly feel, and on clear mornings between October and February the escarpment offers a 360-degree view across the Laikipia Plain to the Mount Kenya massif.
Planning Your Aberdare Safari
Most itineraries allow 2 to 3 nights at Aberdare — enough time for a waterhole stay at Treetops or The Ark plus a moorland day trip. The usual approach is a 90-minute drive from Nairobi to the Outspan Hotel in Nyeri, the traditional staging point for Treetops, with an included lunch before the afternoon transfer into the park. A 3-night stay raises the odds of a black rhino sighting to around 90%, compared with roughly 70% on a 2-night stay.
The moorland is normally visited as a day trip from a lodge outside the park near Naro Moru, a 45 to 60 minute drive to the Kiandongoro gate, from where a 4WD is required for the moorland track itself.
Aberdare combines naturally with Ol Pejeta Conservancy, a two-hour drive from the Salient to Ol Pejeta’s Nanyuki gate. Together they form a 5 to 7 night central Kenya circuit covering the largest black rhino population in Kenya, a chimpanzee sanctuary, and Grevy’s zebra — one of the most species-rich combinations available outside the Masai Mara.
Frequently Asked Questions
How many nights do you need at Aberdare National Park?
Most itineraries allow 2 to 3 nights. A 3-night stay raises the chance of seeing black rhino at the waterhole to around 90%, compared with about 70% for a 2-night stay, and also leaves time for a moorland day trip.
What makes Treetops Lodge famous?
Treetops is where Princess Elizabeth was staying on the night of 5-6 February 1952 when her father, King George VI, died, making her Queen Elizabeth II. It was also the first tree-hotel built in East Africa, opening in 1932 as a simple platform over a waterhole.
Can you see the mountain bongo at Aberdare?
Yes. Aberdare is the most accessible place in Kenya to look for the critically endangered mountain bongo, with only 130 to 140 left in the wild. Dawn and dusk drives on the moorland track give roughly a 30 to 50% chance of a sighting, and the Ark’s waterhole records bongo visits on 1 to 3 nights during a typical 4-night stay.
Why is Aberdare good for giant forest hog?
Aberdare holds Kenya’s highest-density giant forest hog population, estimated at 400 to 600 animals, thanks to its bamboo and montane forest habitat. The species was first described from a specimen collected in the Aberdare Forest in 1904, and sounders regularly visit the Treetops and Ark waterholes at night.
Plan Your Aberdare Safari
Our safari specialists can build Aberdare into a Kenya itinerary alongside Ol Pejeta, the Masai Mara, or Amboseli, with waterhole lodge stays timed for the best rhino and giant forest hog viewing.
Contact us today for a free, no-obligation quote on your Aberdare National Park safari.
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