Zhong yang dian shi tai , Gu Gong bo wu yuan lian he she zhi ; zong gu wen, Sun Jiazheng ; chu pin ren, Zhao Huayong, Zheng Xinmiao ; zong bian dao, Zhou Bing, Xu Huan
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
Wall to Wall Television for BBC and PBS in association with ITEL ; written and presented by Henry Louis Gates, Jr. ; directors, Nick Godwin, Helena Appio
a Tigress production in association with Devillier Donegan Enterprises & PBS ; writers, Anne MacLeod, James Sasse ; executive producer, Jeremy Bradshaw
Genius Entertainment ; produced by Marco Polo Film AG ; co-producers, NDR Naturfilm and NHK ; in association with BBC ; a film by Werner Herzog ; written and directed by Werner Herzog