Here's a New Scientist story about observations suggesting that there is an active volcanic hot spot at the Martian North pole, with several cones about 600 meters tall.
New images reveal volcanic hotspot on Mars
Here's a New Scientist story about observations suggesting that there is an active volcanic hot spot at the Martian North pole, with several cones about 600 meters tall.
New images reveal volcanic hotspot on Mars
Forming opinions as we speak
Very interesting!
Maybe it's still sufficiently active to "power" our first outpost on Mars.