On this site about volcanoes, I have chosen to write about Mona Kea, one of the tallest volcanoes in Hawaii. 

Mona Kea is one of the most tallest of all the Hawaii volcanoes. From the sea floor to it's summit, Mona Kea towers more than 5.6 miles (9 km). It is the second largest volcano on the big island of Hawaii. it began to erupt on the sea floor about 800,000 years ago, spitting out cinder cones and lava, that created now-a day Hawaii and the outer crust of itself. The light colored substance that covers the summit is called glacial till. It is the only known glaciated Hawaiian volcano. Mona Kea has erupt many times in the last 10,000 years. Mauna Kea is considered a dormant volcano, meaning that it has a slight possibility of erupting again, because it hasn't erupted in the last 3,500 years. An extinct volcano is a volcano that will never erupt again.

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