Volcanos are most often referenced in terms of their power of destruction. Here, author Elizabeth Rusch chronicles their presence as a creative force on earth. In an engaging informational narrative graced with bursts of onomatopoeia, she explores how slow flows from volcanos add to the land above and beneath the sea. Volcanos "grow taller and wider. They form majestic mountains. And they build new islands where there were none before." The primary narrative is accompanied by additional information on each page spread providing specific examples of places where volcanos have and continue to add to land mass on earth. A "Volcano Vocabularly" and selected bibliography round out a volume featuring bold collage illustrations. (Ages 6-9)