1.We searched other major valleys sporting outcrops of the same volcanically derived sedimentary rocks, which are exposed across thousands of square kilometers of mountainous terrain.
6.Clearly, it's a plain that it's been volcanically active, and all of us are very hopefully that some places on Mars we could find hydrothermal vents.
7.Jupiter's moon Io is believed to be the most volcanically active place in our solar system so NASA would like to find out more about the eruptions that happen there.