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Hidden away in the up market suburb of Karen is 250 hectares of the indigenous tropical dry Oloolua forest that is home to the Institute of Primate Research (IPR). The National Museums of Kenya, the institution that runs this bio-medical research facility, established the 5km long Oloolua Nature Trail in part of this forest, providing an oasis of tranquility for city residents looking to escape the city hustle and bustle.


The Oloolua Nature Trail is a favourite with visitors coming to do a short hike, to jog along the trail, to walk their dogs, or just for a relaxing picnic in this serene setting. Organized groups also come to learn about environmental conservation through guided tours in the forest.

papyrus-swamp wooden-tower waterfall bamboo nature-trail mbagathi-river


The Oloolua nature trail meanders through thick forest vines and undergrowth below giant indigenous trees and bushes, in some places following the course of the Mbagathi River that cuts through the forest. Giant riverside bamboo stands beckon you to descend some rickety stairs to the river and rest on benches built under the bamboo. Trickling water and chirping birds, the only sounds you hear as you rest, lull you into a reflective mood.

Further along the trail close to the river, you encounter a 33m long cave. If you brought a flashlight with you, an exploration of this dark subterranean world takes you through numerous underground caverns reputed to have once been home to Mau Mau freedom fighters during the colonial period of Kenya’s History. A thick pile of guano underfoot and the occasional disturbance of bats flitting past you bring to your attention the existence of a bat colony within.

A papyrus swamp further down the river offers a further glimpse into the rich biodiversity of this indigenous forest. From here on, the trail climbs out of the river valley, occasional bursting upon glades bathed in bright sunlight before diving back under the canopy of the cool forest cover.

A picnic site complete with benches, drop toilets and trash bins offers a nice setting for couples or groups to rest, play or enjoy a meal within the forest. For those wishing to spend more than a day in the forest, a secure campsite is also available complete with tap water, drop toilets, and firewood for lighting a bonfire. You’ll have to bring your own tent, food and cooking utensils though.

Last and perhaps the most spectacular of the attractions in the forest is a 20-foot waterfall close to the forest entrance. As you pick your way along the trail to the waterfall, you’ll go past a wooden tower that was constructed some years back for viewing a Crowned Eagle’s nest that was situated nearby.  Scientists used this tower to study the Crowned Eagle’s behaviour in its natural habitat. Sadly, human activities and settlements close to the forest have resulted in the birds migrating from this haven.

Cost for Oloolua Nature Trail tour is 100 usd per person for Nonresident per person

Cost for Oloolua Nature Trail tour is 6,000 ksh  per person for resident per person

Cost for Oloolua Nature Trail tour is 5,500 ksh  per person for citizen  per person



·Park fee

·Drive guide                                                                                                                                             


·  Tips or gratuity, drinks; travelers insurance, communication charges,

·  meals, sightseeing not included in the package; optional activities


Visiting Hours

Mondays – Fridays:                 9:00am – 6:00pm

Weekends/Public Holidays:   9:00am – 6:00pm

To camp here, you need to make advance booking through 0720650869. You also need to bring your own tent.

For more information on the Oloolua Nature Trail, visit the smile to Africa adventure , or contact us for your booking 0720650869 or email us booking@smiletoafricaadventure.com

Other recreational parks

Nairobi Arboretum

Central Park

Uhuru Gardens

Nairobi City Park

Jeevanjee Gardens

Uhuru Park

Paradise Lost

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