Poe saw some waterfalls too! We just got home from Idaho last night.
That's Shoshone Falls, just outside of Twin Falls, ID. They call it "the Niagara of the West" although most of the horseshoe shape is gone now, because of irrigation diversions upriver.
We stood in some of the original ruts made in the grass by the Oregon Trail, which is pretty cool. (You can find lots of examples of these all across the country... I've seen a few in different places in Oregon before.)
Some deer approached the campsite at the state park after dinner. Being from the middle of Virginia Beach, I don't see deer too often, so that was really cool.
More photos of the Idaho trip on the blog:http://poeinvb.blogspot.com/2015/07/poe-in-idaho.html