Ethiopia Blue Nile has flowed wild and untamed through the landscape. It is the life blood of the local tribes and a haven for all the wildlife. But this powerful force of nature is under threat. The impending completion of Africa's largest hydro electric dam is about to flood 280 kilometres of the river. We join explorers Charlie Head and Ben Peters will travel these waters facing the dangers and splendour to record and forever preserve 'The Last Descent'. Starring Benjamin James Peters and Charlie Head