With "The Exploration of the Colorado River and its Canyons," readers can explore the one-thousand miles of the Colorado River in its natural state nearly one-hundred and fifty years ago. Legendary explorer John Wesley Powell, accompanied by a crew of close friends and associates, details his travels through the Colorado River and the Grand Canyon at a time when much of the area was unknown to contemporary readers. Starting in Wyoming, the crew travelled...

An elementary exploration of canyons, focusing on the geological evidence that helps explain how and where they form and spotlighting famous examples, such as Arizona s Grand Canyon.

Describes canyons, including how they form, plants and animals in canyons, how people and weather change canyons, canyons in North America, and canyons of the world.

An elementary exploration of canyons, focusing on the geological evidence that helps explain how and where they form and spotlighting famous examples, such as Arizona's Grand Canyon. Una exploración elemental de los cañones, con énfasis en la evidencia geológica que explica cómo y dónde se forman. También incluye ejemplos de ca ones famosos, como el Gran Cañón de Arizona.

A poetic examination of the natural forces that create a canyon.