A great deal of beauty can be seen in the different moods of national parks, as evidenced in the following video of Crater Lake National Park by Rob Mutch.

Some of the most magnificent national parks of the Southwest owe their rugged beauty to the Colorado River and its tributaries. Unfortunately, dams that have sprung up along the river have changed the water flows in a way detrimental to these national parks, according to a report from the National Parks Conservation Association.

It's time to start a pool for those interested in guessing when key roads in Glacier, Rocky Mountain, and Yellowstone national parks will be open for summer traffic.

An avalanche in the middle of the night has killed a climber in Denali National Park.