Bray Jacobson 
Rocky Mountains [PDF ebook] 

The Rocky Mountains were once a great obstacle to those traveling west. Today, they are passable but still formidable in their height and the length of the mountain range. In these ways, among others, the Rocky Mountains are truly a natural wonder! Readers find out the combination of ways the mountain range formed as well as where to find the highest peaks in this book. Accessible language and age-appropriate detail are complemented by full-color photographs of the majestic Rockies as well as a map showing the range’s location in North America.