This is a wide open, desolate landscape that looks like the surface of another planet. It is named for the thick, milky white sheets of geyserite that cover the ground like fine porcelain It is the fastest changing basin in Yellowstone. Because the ground is so thin and the water so acidic, new thermal vents can open up and old ones can explode or close literally overnight. You’ll see a kaleidoscope of colors here. Milky blue pools, neon green algae that love the acid, and orange iron rich runoff channels.

In stark contrast to the open Porcelain Basin, the Back Basin is a forested, winding trail where thermal features are "tucked away" among lodgepole pines. This area is home to deeper, more powerful "plumbing systems". While Porcelain Basin is about shallow pools and steam, Back Basin is about massive power and height. Key Features: * Steamboat Geyser: The main event. It is the tallest active geyser in the world, capable of shooting water 300 feet into the air. Emerald Spring: A deep, 27-foot pool where the yellow sulfur on the walls mixes with the blue water to create a brilliant "Emerald" green. Cistern Spring: A fascinating feature that is physically linked to Steamboat; when the big geyser erupts, this spring completely drains. This is a more intimate, shaded walk that feels like a discovery mission. It’s quieter and more spread out than the Porcelain side.

A favorite for families and photographers alike, this one mile trail leads to a vibrant "laboratory" of color. You’ll walk through a peaceful forest that opens up to reveal over fifty hydrothermal features, most notably the bubbling, pastel colored mud pots. These natural "paint pots" hiss and burp as thick, clay like mud splatters in rhythmic patterns a result of sulfuric acid breaking down the volcanic rock. The short climb to the upper overlook provides a stunning panoramic view of the steaming basin and distant mountain peaks.