Mars, too, has many other types of volcanoes, including the biggest volcano in the solar system called Olympus Mons. ... Arabia Terra so far has the only evidence of explosive volcanoes on Mars.

Is there active volcanic activity on Mars?

Mars today has no active volcanoes. Much of the heat stored inside the planet when it formed has been lost, and the outer crust of Mars is too thick to allow molten rock from deep below to reach the surface. But long ago, eruptions built enormous volcanoes and piles of thick ash.

Does Mars have signs of volcanic action?

New data from Europe's Mars Express orbiter suggests that the Red Planet has witnessed volcanic activity much more recently than was previously supposed.