The Grand Canyon is one of the most amazing sights on Earth--a gorge 277 miles (446 km) long; a wonderland of soaring cliffs made of rocks that are stained many colors. Scientists are learning a great deal about how old planet Earth is based on the layers of rock found in the Grand Canyon.
Well organized information covers topics such as the formation and history of the canyon as well as the composition of the rocks. Unique book design looks like signs posted with thumbtacks on top of identical background photographs. Then it has some photo on top of the signs that add to the three dimensional look. Most of the photos are exceptional. Contains glossary, index, and a list of two web sites. Karen Woodworth Roman, Children's Science Book Review
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