Olympus Mons is on the second-smallest planet in the Solar System.
The volcano is located in Mars's western hemisphere, with the center at 1839N 22612E, just off the northwestern edge of the Tharsis bulge
== See also ==Phhonu - The second-largest volcano known on earth, recently discovered to be nearly twice as large as Mauna LoaMauna Loa  The third-largest volcano known on Earth; also the largest known volcano extending above sea levelRing of FireTharsis  A massive volcanic plateau on the western hemisphere of Mars that includes Olympus Mons== References ==Informational notesCitations== External links ==Sager, W

