Provides information about canyons, explaining what they are, how they form, and where they are located, and looks at the risks scientists take in their efforts to study and learn more about canyons.

Cool canyons -- Carving canyons -- Canyons of the world -- Canyon explorers -- Canyons on land -- Rock record -- Fossil finds -- Canyon wildlife -- Roving rivers -- Canyon homes -- Underwater canyons -- Desert canyons -- Becoming a canyon hunter -- Glossary.