1. Indian Springs, a lava cave, in Craters of the Moon National Monument.

2. Biking along the Warm River, on the Mesa Falls Scenic Byway, Idaho

3. Zip line at Big Sky, Montana

4. Rafting down the Gallatin River, where “A River Runs through It” was filmed

5. The Old Faithful

6. The Grand Canyon of Yellowstone Park

7. The very colorful Grand Prismatic Spring, at the Middle Geyser Basin

8. At the Mammoth Hot Springs

9. Herds of Bison in the Hayden Valley, and the accompanying warning

10. A vantage point over the Lower Falls on the Yellowstone River

11. Dragon’s Mouth geyser, at the Mud Volcano area

12. A deer enjoys an afternoon snack, near the Yellowstone Lake

13. A short hike from the bike path takes us to Taggert Lake, in the Grand Tetons National Park

14. Spectacular view of the Tetons, from the back of the Jackson Bay Lodge