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A Wasted Quarry Transforms into an Animal Haven

There’s an amazing story behind this paradise of forest, grasslands, and ponds. Where a breezy walk in this sanctuary within the city of Mombasa will bring you up close to hippos, giraffes, buffalos, and even crocodiles! However, if you could strip away the animals, the trees and every bit of nature’s greenery, you would uncover the remains of a disused and wasted limestone quarry! More amazing, the quarry was still in use just 40 years ago.

Today, however, you can explore this park under a lush canopy of eucalyptus trees and sidle up to giraffes at the park’s viewing platform. A stroll around these richly forested grounds will bring you to a game sanctuary, reptile park, fishponds, a languid palm garden and yes, a crocodile pen.


Every year, over 160,000 visitors come to Haller Park to stroll at their own pace or take guided tours in English, French, German, Italian or Swahili. For more than 21 years, adults and children have delighted in this wildlife respite from the noise and heat of the big city. But how did a quarry wasteland that was used to supply cement become the lush and thriving eco-system that now delights visitors from all over the world?

One Man’s Vision

Like many African successes, this was a story of determination, talent, and cooperation. Back in the 1970s, the Portland Cement Company had abandoned its limestone quarry but wanted to transform this scarred landscape into something more beneficial to the community. What happened next far surpassed any vision they had for their abandoned pit.

Enter Dr. Rene Haller, a Swiss naturalist trained in horticulture and related scientific fields. Dr. Haller spent years that eventually turned into decades studying and experimenting with dozens of plant varieties, trying to find those that would thrive in the poor soil and salty water table.

Haller also worked to improve the quality of the soil to help with the reforestation process, and slowly a new eco-system started to form. Insects and small animals began to feed in the area, adding to the organic mix. To date, Dr. Haller has had success planting baobab, coconut, date palm, banana, mango, and other tree varieties.

The Hippos Save the Day

As work on the new park progressed, plans were made to create fishponds, but immediately problems occurred. For some reason, the fish weren’t surviving, but Haller recalled a piece of African folklore he decided to follow. It was said that if hippos were removed from certain ponds, the fish died.

It seems that the hippos’ waste matter fed plankton in the water, supplying food for the fish. Further, the hippos’ activity aerated the water, also benefiting the aquatic life. Acting on these traditional stories, Dr. Haller located two hippos, Sally, a boisterous young female raised by friends, and Potty, who was abandoned by a traveling zoo.

The hippos were resettled in the park, became instant friends and are now inseparable. And the fish, as foretold, have also thrived.

The Park was honored with the United Nations Environmental Program – Global 500 Roll of Honour award for the successful rehabilitation of this eco-system.

About Haller Park

Climate: Mombasa has a tropical climate with more rainfall in the winter months. March is usually the warmest month with an average temperature of 29oC/82oF.

Location: 12km (7.5 mi) north of the Kenyan coastal city of Mombasa.


Operating Hours: The Park is open from 08:00 hrs. to 17:00 hrs. daily, including weekends and holidays.

Getting there: You can book a tour with Natural World Kenya Safaris in Mombasa.

By air: Moi International Airport is the main aviation hub serving the coastal city of Mombasa.

Things to Do and See

Sally and Potty – The famous hippo couple is still entertaining the park’s visitors. Watch them being fed daily at the Game Sanctuary at 4:00 pm

Crocodiles – This fascinating species was brought to the park in 1975 and has successfully reproduced since the 1980s. Waste from the fishponds is used to feed the crocodiles.

Night Walks – These evening sojourns will entertain you with sightings of bushbabies, owls, fireflies, and genets.

Observation Platform – You can view the giraffe close-up and even feed them with pellets handed out by the guides.

Birdlife – The park is a bird lover’s paradise. Look for kingfishers, storks, herons, egrets, owls, eagles, cranes, sandpipers and much more.

Discover Haller Park Sanctuary

If this lush park were in a naturally occurring setting, it would have been impressive on its own. But having transformed a previous ecological eyesore into such a bountiful retreat is a testament to Dr. Haller and the many others who helped make this sanctuary such a wonderful place to visit.


Haller Park with Natural World Kenya Safaris

Take a Natural World Kenya Safaris city excursion to Haller Park for a refreshing day, up close to a wonderful variety of wildlife.

We have safaris departing from Mombasa to this and other special Kenya Parks and attractions for your Africa holiday.

Please click here to view all our safaris throughout Africa.




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