Hell's Half Acre, a neat lava field about 20 miles south of Idaho Falls.
We were the only ones on the lava flow trail, which was paved and easy walking. Although we did see a family do some geocaching at the picnic bench right at the beginning of the trail. We might have to give that a try on a future vacation.
Then it was more driving, with great scenery, like the west side of the Tetons as we approached West Yellowstone.
It was a wonderful summer evening, and just the start of our fun adventures in Yellowstone.