We were talking to a local artist in Afton, WY, and he asked if we'd been to "the geyser". He explained that it was the largest periodic spring in the world. After Yellowstone, we then had to find it. He said that it's just east of town, and told us where to turn. So we drove through the residential area, and then followed County Road 138 along swift creek. And it ended. No signs, but there appeared to be a path beyond the dead end...
