An Intrepid adventurer, Mark has spent the last decade travelling areas left ominously blank on maps. This is the story of his malaria-wracked expedition across central Borneo. Once again he defies cartographers by going in search of the `wild men of Borneo` - a tribe of jungle dwellers whose existence is validated only by myth. With fellow traveller Paul he paddles up an uncharted river into what was believed to be the valley of the spirit world - where even the island`s fiercest head-hunters feared to go. Crossing mountains that no western eye has ever seen, they penetrate ever deeper into the vengeful jungle. On the way they encounter shipwreck, malaria, amoebic dysentery, near starvation, leeches, exhaustion, enforced alcohol abuse, barbecued mouse-deer foetus and a ferocious craving for chocolate!