'Tom Harmon', a former football star who was shot down in the jungles of the South Pacific during World War II and survived thanks to a booklet on survival written by 'Dana Lamb', appears in the foreword to the film.
Using a special time exposure mechanism on their 16 mm camera, the Lambs were able to photograph themselves as well as the hardships they encountered.
It was only after they had perfected a special time exposure mechanism on their camera that 'Dana Lamb' and Ginger Lamb were able to photograph themselves making their hazardous trek into the Guatemalan jungle.