a presentation of the National Park Service ; a film by John Grabowska ; producer, John Grabowska ; co-producer, Tim Lay ; directors, John Grabowska, Tim Lay ; writer, John De Lancey
a co-production of Blair Brothers Productions and WGBH, Boston ; writer, Lawrence Blair ; directed by Lorne Blair ; Beyond the ring of fire directed by David Fanning ; produced by Lawrence and Lorne Blair