Congo Journey is the Kindle version's name of Redmond O'Hanlon's book first published in 1996 called No Mercey: A Journey to the Heart of the Congo.

I read this as part of a quartet of Congo River books I'd bought with a view to deciding which book was the best Congo River journey of them all. Part way through the book however, I realised that Congo Journey was quite different from the others in that the travelogue mostly occurred on land away from the Congo River and secondarily it took place in the People's Republic of the Congo.