The Eyjafjallajokull volcano began erupting in March ... Most of it was very fine particles which formed an ash cloud, rising 6-10km (20,000-35,000 feet) into the atmosphere. Ash clouds pose great ...

Various volcanic features can be found on the rocky planets neighboring Earth. Mars contains volcanic plains formed by past eruptions and inactive shield volcanoes that are much more massive than ...

Read More: Olympus Mons: Mars' Mega Volcano Various volcanic features can be found on the rocky planets neighboring Earth. Mars contains volcanic plains formed by past eruptions and inactive ...