Porcelain Basin is one of the two distinct basins that make up the Norris Geyser Basin -- the hottest geyser basin of Yellowstone National Park.
The Back Basin and Porcelain Basin of Norris are quite different from one another. The Back Basin is forested. Porcelain Basin, on the other hand, as you can see, is pretty much devoid of life. Whereas other thermal springs in the Park are often vividly colored by the thermophiles that inhabit them, the acidic hot springs of Porcelain Basin are more subtly colored by mineral oxides.