Tour Operators in Cameroon:
BERUDEPIs a local organization that offers volunteer opportunities for responsible travelers. They have very experienced guides and can arrange for CAR RENTAL at a local price.
Heritage Tours CameroonHeritage Tours offers experienced guides and activities that range from eco-tourism to safari-tourism to cultural tourism to volunteer activities and homestays. Heritage Tours can arrange tours through Cameroon’s equatorial rainforests in search of the pygmies and gorillas, through the plantations and cultural manifestations of Cameroon's diverse ethnic groups, and to the north to explore Cameroon's pristine Safari parks. Heritage Tours offers free tourist information: Heritage Tours holds a database of local information with up to date prices, opening and closing times, seasonal activities etc.
Train service, Camrail (http://www.camrail.net/), exists from the capital, Yaoundé, to the port city of Douala and the northern city of Ngaoundéré. While bus service is quicker and more reliable to Douala, the overnight train is the best mode of ground transport to the north. Check for current schedules and pricing.
Camair-Co (http://www.camair-co.cm/e...) is currently operating as a national carrier and on domestic flights.
Rental cars are available although very expensive. As paved roads are rare away from the major cities of the west and northwest, a 4 x 4 is a necessity when traveling to the eastern or central areas of Cameroon. The roads in the north are paved between cities and even the dirt roads tend to be in decent condition due to the lack of rain.
Between major cities you can get a ride on modern, comfortable buses, sometimes with air conditioning. Away from the larger centers you will most likely end up on the ever-present Toyota bush taxis. These are slightly elongated Toyota minivans that can hold up to 20 people or more if necessary along with their luggage piled up on top. Safety can be a concern with dangerous roads, overworked/drunk/hungover drivers and poorly-maintained vehicles the norm. However, other than extending your stay an extra day or 2, in bad weather your options are limited.
Note that buses rarely leave at a set time; instead, they wait until they are full and then depart. Later in the day, buses sometimes never fill up. When this happens, the operator will normally set you up with a bush taxi to take you to your destination. If you do not want to take the bush taxi and are persistent enough, the operator will normally refund your money. The point is that you should leave plenty of time to get to your destination, because sometimes the wait will take hours and you are never guaranteed a departure.