Armed with equipment and advice from 22 SAS, Hereford, and accompanied by three trackers, Redmond O'Hanlon, the naturalist, and James Fenton, the poet, set out on a long river voyage into the interior of a tropical jungle hoping to reach the Tiban massif. At once funny and knowledgeable, Redmond O'Hanlon's account of how they battled with insects, discomfort and setbacks is a hugely entertaining and informative adventure story in the best tradition of the world's great travel classics.