The walk had some varying terrain. You start along the canyon then undulate through forest. The descent begins with a geyser then others as the descent drops more dramatically. Nice views along the trek. Walking sticks are handy down and up. Have lunch along the river upwind from the sulphur smelling geysers. The trek back I did huff and puff, still trying to get acclimated. Wildlife spotted was limited to chipmunks and squirrels. Only saw a dozen other hikers.
Highly recommend.