Most of this image occupies the foreground layer of colored rock and soil that makes up a thermal feature. As it flows towards the trees, the ground becomes wet, finally turning to glistening water. From here, the image transitions into the trees, steam and snow that fills the top layer. The texture changes from rough to smooth, while the color moves from brown to white, culminating in a transition layer triggered by the first stand of trees that enters the image at right. Transitions sometimes may be abrupt. This one, however, is gradual. There are two different worlds in this photograph, yet they flow seamlessly into each other at the point of transition.