lake of death

Death due to water is very common to listen , most of take place due to sink down or drown ,and generally due to lack of knowledge of swimming.Sometimes drinking impure water also become the cause of death.In the area of western Africa "Cameroon" there is a lake that emit poisonous gases naturally,and due to its poisonous nature its name is"NYOS",and this innocent lake is responsible for a number of deaths that took place in last some years , it has taken thousands lives.In August 1986,one night it release carbon dioxide  that it became the cause of death of some 1,700 people and 3,500 livestock's.This is the lake responsible for greater number of deaths as compared to any other lake,river,sea,ocean,stream or bay.