File image of the entrance of Kitum cave Kitum Cave, situated in Mount Elgon National Park in Kenya, gained notoriety after two visitors contracted the deadly Marburg virus and subsequently died. Research indicates that the virus thrives in caves and mines where animals like Rousettus colony bats leave traces of their presence. Humans exposed to such environments for extended periods may contract the virus, as was the case with the French nationals—a man who died in 1980 and a boy in 1987—shortly after visiting Kitum Cave. These two deaths prompted investigations, including a visit from the United States Army Medical Research Institute of Infectious Disease (USAMRIID) to ascertain the cause of the fatalities. Surprisingly, the research did not find any signs of the Marburg virus at the time, leading to a discrepancy with earlier reports attributing the deaths to the virus. Despite these mixed findings, Kitum Cave remains one of the most dangerous caves worldwide...