Oloolua Nature trail is located inside the Institute of Primate Research compound, in Karen, Nairobi. It is located at the end of Karen Road, right after CEMASTEA.
If going there by bus, you can board a no. 24 that goes to Karen Hardy and alight at the junction of Karen Road and Bogani Road.
It is quite a fun place to spend a few hours if you want to take a walk and clear your mind. The air there is clean and crisp. There are many trees. It is quiet and so tranquil. There are a few benches along the trail, which provide for great spots to relax and read a book or write.
There is a camping site as well, and grounds to hold a family gathering like a wedding reception, corporate event or team building sessions. The charges are quite pocket friendly.
The things to check out for in the nature trail include the eagle hide, waterfall, swamp, and the cave.
At the entrance there is a map that gives one a general idea of what the place looks like. But I feel like it is very hard to follow the map and that it should be redrawn and made more precise.
Overall, this is a good place to spend few hours especially for an introvert like me. The guards there and very friendly. If you like the outdoors I guarantee you will like this place.