A new survey using satellite imagery and ground penetrating radar has revealed signs of volcanic activity that's far more recent than anyone ever expected.

The study, conducted over a plain known as the Elysium Planitia, reveals volcanic activity that has taken place within the last 120 million years. In fact, some of the identified volcanic activity has been dated to just 1 million years ago.

That's very recent, geologically speaking; and, although we have yet to observe any volcanic activity actually taking place, it suggests that, somewhere on Mars, it might be.