Gecko's Adventures. Overland Adventure & Adventure Tour Companies. Overland Expeditions. Flatdog Adventure tours and Overland Travel. truck bus and hike. Acacia Overland. Africa Overland Tours. Africa Overland Tours with Absolute Africa. Drifters Adventure Tours and Lodges. Kumuka - Overland Tours. All Kumuka overland expedition tours take place on our traditional blue trucks carrying a maximum of 20 passengers. These trips use a combination of camping and/or hotel accommodation. Overland trips can be physically quite demanding but are suitable for almost anyone with a healthy appetite for adventure. Overland tours offer more flexibility and adventure using Kumuka's purpose built vehicles. Oasis Overland – Adventure Travel Holidays, Trips and Expeditions! Overland Trips, Adventure Holidays. Nomad Adventure Tours - African Overland Adventure - October 2011.