This was taken as I was getting close to Old Faithful. You can see steam rising from one of the nearby geysers at the end of the trees on the left side of the road.
And here is Old Faithful. She surprised all of us by going off more than 15 minutes earlier than the park rangers predicted. If you ever visit here to take photos, make sure you scope out a location early. Depending on where you set up, your background could be trees, sky, hills, a building, etc. So plan it out before the eruption!
This is a walkway to get to Old Faithful. It was not erupting at the time, but that's it in the bottom center.
As I was driving by, I spotted this view out of the corner of my eye, looked to see if anyone was coming behind me, slammed on the brakes, and put it in reverse. It was worth the effort!
This was taken further along the Lake. You follow it for a good distance, and it provides some great shots.
And to be honest, this and the next two photos, I'm not exactly sure where they were taken! The best I can say it they are from the northern Wyoming/southern Montana area.