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Olympus Mons on Mars stands about two and a half times taller than Mount Everest. The figure is taken from ESA, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

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Yes. It sits on the Space shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

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Mondo Knows Facts

Mars hosts the largest volcano in the solar system

Olympus Mons on Mars stands about two and a half times taller than Mount Everest

Olympus Mons is a giant shield volcano on Mars rising nearly 22 kilometres high, making it nearly three times the height of Mount Everest above sea level. It is so wide that its outer edges would stretch across an area roughly the size of Poland or Arizona.

Olympus Mons alt photograph — Image by NASA , modifications by Seddon · Public domain · source

Where this comes from

ESA

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Tags: mars, volcano, geology

Mars hosts the largest volcano in the solar system: the short answers

Where does this come from, and can I check it?: Olympus Mons on Mars stands about two and a half times taller than Mount Everest. The figure is taken from ESA, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a space fact?: Yes. It sits on the Space shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.