Olympus Mons Trivia Questions

Mars has many volcanoes, including Ascraeus Mons, Pavonis Mons, and Arsia Mons in the Tharsis region, among others.

Olympus Mons is situated near the equator of Mars at approximately 18.4° N latitude, placing it in the northern hemisphere.

Olympus Mons is a shield volcano created by a stationary hotspot beneath the Martian crust, analogous to Earth's hotspot volcanoes like Yellowstone.

Olympus Mons's volume is ~2.5 million km³, Mauna Loa's ~75,000 km³; the ratio is about 33:1, not 100.

Olympus Mons is a dormant/extinct shield volcano on Mars. Its most recent volcanic activity is estimated at 2 million years ago, not within the last 100 years.

Olympus Mons has a base diameter of about 600 km, covering an area roughly the size of Arizona (295,000 sq km).

Olympus Mons has a large summit caldera about 85 km wide, formed by multiple collapse events. It is one of the largest calderas in the solar system.

The bright albedo feature Nix Olympica, later identified as Olympus Mons, was telescopically observed by Giovanni Schiaparelli in 1879, so the feature was indeed seen in the 19th century.