Castle Geyser in Upper Geyser Basin of Yellowstone National Park in Wyoming, USA - stock photo

Castle Geyser is a cone geyser in Yellowstone. It's known for it's large porous mineral deposit (geyserite sinter). It has a 10-12 hour eruption cycle that last for about 20 minutes and reaches the height of 90 feet (27m). Yellowstone National Park is the first national park in the USA. It is a UNESCO World Heritage Site.