Oku is a region in the Northwest Cameroon. The term Oku also refers to the people who live in this region and the primary language that they speak (although English is also widely spoken). Oku is a rural area containing about thirty-five villages. The nearest really large city is Bamenda, but Kumbo, which is closer (about 18 miles from the village of Keyon, or about seventy minutes by car), is large enough to have telephone lines and a Baptist-run hospital. Oku is also relatively near to the Nigerian border, and travel across the border is common, as many people in the region have relatives in Nigeria.
There is a crater lake in Oku which has been the subject of some research by Westerners. Quantities of gas build up in the lake and occasionally are released; being heavier than air, they pour down the mountainside and can suffocate entire villages. Some of the locals believe that a god lives in the lake and must be appeased.
Oku has few good roads, and none that would be called good by most Westerners.
As of 2004, the current Fon (i.e., the traditional king of the people, but with no formal political power), who has a Baptist background, is attempting some religious reforms, to move the people away from some of the more un-Christian traditional practices; these reforms have met with considerable resistance.