The kids both wanted to try a trail ride, so we were able to book a one-hour ride at the nearby stable in Canyon Village. We booked the ride in the morning to avoid the heat, and had the added bonus of being able to drive through Hayden Valley early in the day, when our chances of seeing some wildlife were greater. So - up early again, and we were out the door promptly at 7. Since our ride didn't start until 9:15, we had some time to explore along the way. Since it was a cold morning, we saw a lot of steam coming from the earth that we hadn't noticed during our drive in. We pulled off into the almost completely empty parking lot where there is a short walkway around bubbling mud pots that leads to a feature called the Dragon's Mouth. Bubbling mud pots in Yellowstonr The audio doesn't come through very well, but this cave lets off periodic bursts of steam, along with what sounds like a huge, forceful exhale. It's pretty cool. Continuing on, we wound ou...