Mars
Olympus Mons on the planet Mars is the largest known volcano in the Solar System.
Mercury is the largest inner planet in our solar system.
Mars
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The largest known volcano in the solar system is Olympus Mons, which is on Mars.
Olympus Mons, which has a peak of 69,649 feet, is the largest volcano in the solar system. It is on the planet Mars.
Earth has the largest moon in the inner solar system by far.
Mars, but the volcano is probably not active now.
Earth is the largest of the four inner planets.
Earth has the largest diameter of the four inner planets (12,756km at the equator).