The Exploding Lakes of Cameroon

　　blue water，birds，and fish.For the people in the northwestern Cameroon，however, the image is

　　out of Lake Monoun and came down into the nearby villages，killing thirtyseven people.Two

　　killed 1,700 people.

　　collected in the craters of old volcanoes The volcanoes under Lake Nyos and Lake Monoun are

　　through cracks in the bottom of the lake. This is normal in a crater lake. In most crater lakes，these

　　bottom of the lake rises and mixes with the water at the top，allowing the gases to escape slowly.

　　reason for this fact，but as a result，these lakes have more gases tapped at the bottom than other

　　times more gases.When a strong wind，cool weather a storm，or a landslidecauses the

　　In the past，no one knew when the gases might explode，so there was no way for the villagers

　　way to reduce the gas pressure at the bottom of Lake Nyos.They stood a 672-foot plastic pipe in

　　the top of the pipe，the team put several holes that could be opened or closed by a computer.Now，

　　up through the pipe into the air like a fountain.With less pressure，a disastrous explosion is much

　　To protect people nearby until all of the pipes are in place.the scientists have installed early

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