All canyons are deep, steep valleys, but there is more to these
landforms than meets the eye! Rivers form some canyons, while the
movement of Earth's crust forms others. To get to the bottom of the
Grand Canyon in Arizona, you'd have to travel more than a mile! Give
beginning readers all the need-to-know information about canyons,
including their characteristics, how they form, and where they can be
found around the world.