Are you one of those individuals, whose weekends are spent taming a rapid, climbing a mountain, wriggling through a cave or leaping off a cliff? It is very likely then that when it comes to choosing a foreign holiday you would be seeking destinations that are as action-packed and adrenaline-fuelled as they come. If you see yourself manhandling a Land Rover out of a ditch or pitching a tent in the middle of the wilderness look no further than Africa.