Great explorers

"Discover the stories of explorers -- the most ancient to the modern day -- from the deepest depths of the ocean to the highest mountains in the world. In this book you'll find true stories about Marco Polo's Silk Road, Edmund Hillary and Tenzing Norgay's conquest of Everest, and Buzz Aldrin and Neil Armstrong's trip to the moon, and much more. Learn all about the explorers who discovered the unknown and made the world the place we know today"--Provided by publisher.