Porcelain Basin Hot Springs is in the Norris Geyser Basin which is one of the most active and dynamic thermal basins in in Yellowstone National Park. Yesterday, the fumaroles, perpetual spouters, and springs were more active than I’ve seen on any of my many previous visits to this area. What a sight, with steam gushing from hundreds of vents across the vast area at once! The winds whipped the mists obscuring the spouts from view then as suddenly the air cleared to show this incredible scene only to disappear seconds later, shrouded in the caustic mists. The mineral, siliceous sinter, is spewed through the active vents in the hot water and settles out over this flat area. This mineral is one of the agents of change in the basin. After witnessing this incredible and dynamic display, it is not hard to imagine that this area of Yellowstone is one of the most active and fastest changing areas in Norris Geyser Basin.