The film narrates the various stages and adventures in the trek through the forest to reach the Ruwenzori mountain in the heart of Africa where the Nile rises. In the local language Ruwenzori means "the one who provides the rain" but the first explorers called it "the mounain of the moon" because of the snow that shines in the night. During the journey we meet pygmies and see the eruption of the volcano Kitazungurwa. Other strange incidents occur which however do not worry the two explorers.
Bernard Germain graduated from the Paris Sorbonne University; he is a mountain guide. He runs La Montagne et l'Alpinisme, the magazine of the French Alpine Club. He has made several films which have influenced mountain cinema, including Annapurna - 1.er 8000 à ski, Un pic pour Lénin, Le concerto d'Alaska, winning the City of Trento Grand Prize in 1983, and Désire d'Everest, which won the Golden Gentian for Best Mountaineering Film in 1991.