Why Italy

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Summary: — a giant magma chamber. As the magma moves deep belowground, the land above it also moves, and new research is showing that such changes are more variable than previously thought. Dating of fossilized mollusk boreholes in Roman columns, shown here in Pozzuoli, Italy, is giving researchers a better idea of when and by how much land has risen and fallen over the

Image Dimensions: 400 x 253