It is the only tropical rainforest in Kenya, left over from past millennia when dense rain forest stretched from West Africa, across Central Africa and into the highland areas on the west and eastern walls of the Great Rift Valley. The forest has been a protected area of Kenya since its vital role in the ecosystem was first recognised in 1933. The sheer size and grandeur of these immense trees, some over a hundred years old, is impressive. The trees create a complete environment for the birds, insects, butterflies and wildlife, so plentiful in this area.
Splendid orchids sit amongst the branches of the larger trees.
Walking beneath the lush forest canopy the deep shade is pierced by flashes of colour, exotic birdcalls, the scents of wood, flower and moss. The best time to visit is during the rainy season, April to July, when the flowers are at their most beautiful. There are 7kms. of trails with a team of ranger guides to escort visitors through the forest. The walk to Buyangu Hill, a short, sharp climb to a rocky summit from where one can see the whole forest to the south, is worth visiting. The indigenous trees lining the trails are identified on signs with their local and latin names.