Here's a spot in the pavement where the earths crust has broken through. It's important to stay on the trails because you can get burned (more like cooked alive) if the crust gives way.
We are standing in the run off from the bacterial pools. In this spot the warm water has mixed with the cold water and it's connected to one of the Yellowstone lake tributaries.
We were on a path, but it wasn't an "Official" path. It's kinda like land mines , this path was well traveled - tested if you will but it wasn't official.