Catching up for my absence, the "Earth Observatory" had these three views of volcanoes taken from space. Click on each to go to the accompanying article page, which has high-resolution version links. Mt. Etna Mt. Fuji Colima (Mexico) And here's a no-image link to an article and image about a big Sahara sandstorm going out to sea: Sahara Dust Sweeps Past Canary Islands