Christo Prodanov References Christo Prodanov Bulgarian mountaineer Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of EncyclopƦdia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: Mount Everest/ Developments in Nepalā¦Bulgarian to reach the summit, Christo Prodanov, climbed without supplemental oxygen, was forced to bivouac overnight during the descent, and diedāone of four summiteers who climbed without oxygen in the 1980s and failed to return. Read Moreā¦Bulgarian to reach the summit, Christo Prodanov, climbed without supplemental oxygen, was forced to bivouac overnight during the descent, and diedāone of four summiteers who climbed without oxygen in the 1980s and failed to return. Read More