 According to their customs, from the moment they first set eyes on the mountain to the moment they stand at its base, they must not utter the mountain's name for fear of antagonising the spirits on the summits.There have been regular sightings of flames bursting out spontaneously on the male peak, where Charles Hose, a naturalist and an administrator served under Brooke regime also witnessed this phenomenon.He reasoned that the bleached surface of the limestone acted as a magnifying glass, causing dry grass to catch fire.