How big is Kitum Cave? What are the characteristics of Kitum Cave as a natural habitat?

The Cave is quite large with zones that one passes through. As they approach the cave, the author realizes that everything he sees is a potential transmitter for the Marburg virus: every moth, every insect, even the stinging nettles. The trail leading to the cave is also covered with animal dung, another possible host for the virus, and the author becomes increasingly nervous about his mission.