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That's right. Thanks to NASA National Aeronautics and Space Administration, U.S.A.

Well, the largest volcano is found on Mars. It covers an area the size of Italy or about the same size as the area of Arizona.

Want to find out more from NASA, U.S.A.?

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I didn't know that the largest volcano was found on Mars. The large volcano found on Mars is not found on Earth..............

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There are many such volcanoes. But the truth is that they are not found untill now.

The largest volcano which is found is in Mauna Loa, Hawai'i Big Island


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Thank you, @Vishnu23 They (at least some) are found-- as far as the NASA, USA, has credible evidences and facts.   Mauna Loa, Hawaii, is the largest volcano on earth. Olympus Mons is the largest volcano in the solar system. The volume of the Olympus Mons is larger than that of Mauna Loa. 


Thank you for answering.

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I did not know this fact. I thought that we can only find it on Earth. I wanted to know more about it. Is this volcano active? I mean can it explode anytime?
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 'caldera' is a large crater-like feature formed after a volcano eruption, according to National Geographic.

When a volcano erupts, magma is expelled forcefully from within the magma chamber underneath the volcano. Because the structural support that the magma chamber had provided the volcano disappears, it causes the sides and top of the volcano to collapse inward. Calderas often vary in size ranging from 1 to 100 kilometers in diameter.

There is also a type of caldera called 'resurgent caldera.' These occur when large magma chambers underneath the volcano empty in such a way that causes a series of pyroclastic flows, fast moving current of hot gas and volcano matter. Over time, the magma chamber is refilled and the caldera floor is pushed upward, thus the name 'resurgent' which means "risen again."

So, what was discovered?

The marine geophysicists group that discovered the existence of the world's largest caldera consists of New Zealand-based Filipino scientist Jenny Anne Barreto, along with co-authors Ray Wood and John Milsom.

The caldera named 'Apolaki,' which means "giant lord," is based on the Filipino mythical god of the sun and war.

The University of Philippines Marine Science Institute states in a Facebook post that Apolaki Caldera has a diameter of roughly 150 kilometers, more than twice the size of Wyoming's Yellowstone Caldera in the U.S. which is only about 60 km.
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Thank you for the extensive research. I have learned an additional information.
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According the research that I did, the largest volcano is Mauna Loa on Hawai'i Big Island. It is a massive shieldvolcano constructed by countless lava flows. When measured from the base to the top, the pile of lavas measure more than 17000 m (56000ft).
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"The volume of Olympus Mons is about 100 times larger than the Mauna Loa. In fact, the entire chain of Hawaiin islands (from Kuai to Hawaii) would fit inside Olumpus Mons." NASA.

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Yes I know that the biggest volcano is on MARS planet. It is very big in  solar system. Earth have many volcano but MARS volcano is very very big.
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Now I know thanks alot for the information. The advancement in science and technology has helped all these discoveries and am glad for the scientists who have been working to help us know what is found in space. 
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Height of volcanoes or a mountain depends upon the elasticity of the planet . According to Theory of elasticity the maximum height can a mountain attain on the earth is approximately 10 Km .

On Mars it is more so large volcanoes not found on earth. 
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The largest volcano on earth is Mauna Loa on Hawaii's Big Island. It is a massive shield volcano constructive by countless lava flows, it is also the highest mountain on earth in fact is so heavy, that its weight has bent the oceanic crust under the volcano several kilometers downwards into the mantle.  Mauna Loa is one of the Earth's most active volcanoes, with 33 documented eruptions in historic times.
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The largest volcano is found on Mars. It covers an area the size of Italy or about the same size as the area of Arizona.

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Visit the NASA website and type in "Mars volcano" into the search bar. You will get results in both English and Spanish................................................
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Yes, from NASA, U.S.A. you can learn more about the largest volcano on Mars. The volcano, called Cascais, is considered the largest and most complex of many smaller volcanoes on Mars.
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the largest volcano in our solar system is not found on Earth, but on Mars. It is called Olympus Mons and is about three times the height of Mount Everest.
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 NASA, USA, has credible evidences and facts. Mauna Loa, Hawaii, is the largest volcano on earth. Olympus Mons is the largest volcano in the solar system. The volume of the Olympus Mons is larger than that of Mauna Loa
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