Grand Canyon of Yellowstone from Artist's Point Lookout.

A view of the Grand Tetons.

Close-up view of the Grand Tetons.

Inside Yellowstone looking from one mountaintop to another.

Geyser at edge of Yellowstone Lake.

Multi-colored hot springs.

Looking into a hot spring.

Old Faithful spouts about every 67 minutes.

Another hot spring.

One of many beautiful waterfalls and streams in the park.

Looking across Jenny Lake at the Grand Tetons.

Another view of Tetons across Jenny Lake.