There is something that is three hundred and four meters taller than Mount Qomolangma.However,it is mainly underwater.It begins at the bottom of the Pacific Ocean,and rises more than seventeen kilometers from the ocean floor.

　　Its name is Mauna Loa.In the Hawaiian language,Mauna Loa means 揕ong Mountain?Mauna Loa is more than half of the island of Hawaii,the largest of the Hawaiian Islands.It is also the largest and more active volcano on Earth.It has erupted more than thirty tsTimes since records were first kept in eighteen forty-three.Today,it is not erupting.However volcano experts say it is only a matter of time before this happens once again.

　　Mauna Loa is not the only volcano on the island of Hawaii.There are four others.One of them,named Kilauea,is still active.It has erupted more than fifty times in the last one hundred years.At this moment,red hot lava is pouring out of Kilauea.It has been doing this since nineteen eighty-three.Sometimes the lava moves slowly.At other times it pours out very fast as huge amounts of pressure force it from the volcano.During these times,it moves almost as quickly as water moving down the side of a mountain.Experts say the volcanoes of Mauna Loa and Kilauea are a serious threat to property on many parts of the island.

　　Experts say the volcanoes of the island of Hawaii are proof that the changing environment of Earth is,and will always remain beyond human control.

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