The largest volcano on Mars is also the solar system's tallest mountain. It covers an area similar to the state of Arizona and is located near three other volcanoes known as the Tharsis Montes.

Mars has many interesting features, but one of the most amazing is Olympus Mons, the tallest volcano in our Solar System ... the highest mountain on Earth. If you could place Everest at the ...

Since Edmund Hillary and Tenzing Norgay first conquered Everest in 1953, the mountain has ... is Olympus Mons on Mars, which is the tallest volcano in the solar system at 21,945m (72,000ft ...