To the east of Mount Rainier are the remains of a once-mighty Cascade volcano. In the hills outside of Naches, Washington, at the foot of Mount Rainier are the remains of a much older volcano. Join ...

Kauai and Niihau islands are the oldest of the eight main islands in the state of Hawaii. They were each formed about 5 million years ago. Erosion and landslides have produced dramatic cliffs on many ...