The Continental Divide Trail goes through some of the most ... 1975.8-2002.3 The geothermal activity in this little-trodden stretch of Yellowstone is captivating and sometimes a little unnerving.

The truck is parked at a roadside pullout near the Continental Divide in Yellowstone National Park. (Photo by Jamie Farrell, University of Utah, September 2020, taken under Yellowstone National ...