Minerva Terrace, Yellowstone Park, USA, c1900. There are thought to be about 1,000 geothermal features in Yellowstone, including geyser basins, hot springs, mud pots, and fumaroles. Yellowstone National Park, established in 1872, extends across Wyoming, Montana, and Idaho. It was the first national park in the US, and is also widely held to be the first national park in the world. From Scenic Marvels of the New World edited by Prof. Geo.R. Cromwell. [C.N.Greig & Co., c1900]