Artemisia Geyser is a geyser in the Upper Geyser Basin of Yellowstone National Park in the United States. Artemisia Geyser is part of the Cascade Group which includes the Atomizer Geyser. It erupts for a duration of 15 to 25 minutes once or twice per day. The fountain reaches a height of 30 feet (9.1 m). Artemisia's pool overflows quietly for many hours before an erup...

Aurum Geyser is constantly boiling in its main vent, a small pool surrounded by raised sinter deposits almost forming a cone structure. The surrounding area is covered in hard sinter and a few other smaller steaming vents. Before an earthquake in 1983, Aurum was actively boiling but eruptions were rare. Now, eruptions are irregular, ranging from 22 hours to over 2 wee...

Baby Daisy Geyser is a small orange pool with solidified sinter covering the surrounding area, forming a small rim around the pool and a runoff channel. The center of the pool drops into a deep vent. Baby Daisy Geyser is named after its low angle eruption resemblance to the larger eruptions from Daisy Geyser, but the most recent eruption occurred in 2004. Baby Daisy ...

The Gibbon, Heart Lake, Lone Star, and Shoshone Geyser Basins are located away from the heavily traveled portions of the park. Some require several miles of off-trail hiking to reach. These areas also generally lack the boardwalks and other safety features of the developed areas. As falling into geothermal features can be fatal, it is usually advisable to visit these ...

Bead Geyser is a fountain-type geyser in the Lower Geyser Basin of Yellowstone National Park in the United States. Bead Geyser is part of the Pink Cone Group. Other geysers in this groups are Box Spring, Dilemma Geyser, Labial Geyser, Narcissus Geyser, Pink Geyser, and Pink Cone Geyser. Eruptions of Bead Geyser last about 2½ minutes and are 25 feet (7.6 m) high...

Bearclaw Geyser is a small feature in the Fountain Group of Yellowstone’s Lower Geyser Basin. It is located 8 meters south-southwest of Twig Geyser’s vent. Bearclaw erupts from two vents, but this area formerly had four vents. A third, eastern “vent” occasionally steams. Activity at Bearclaw Geyser includes gurgling, small spitting, and small e...

Beehive Geyser is a geyser in the Upper Geyser Basin of Yellowstone National Park in the United States. The 4-foot (1.2 m) tall cone resembles a beehive. Beehive's Indicator is a small, jagged cone-type geyser located about 10 feet (3.0 m) from Beehive. Eruptions of Beehive Geyser last about 5 minutes and are 200 feet (61 m) high. The fountain maintains its full ...

The hottest of Yellowstone's geothermal features are steam vents (fumaroles). Black Growler Steam Vent has measured 199 to 280 degrees F (93 to 138 degrees C). A plentiful water supply would help cool these features; however, steam vents are usually found on hillsides or higher ground, above the basin's water supply. They rapidly boil away what little water they conta...

Blue Geyser was called Iris Spring in 1886. Due to a misread map label, in 1904 the feature was inadvertently given its current name. It was observed to erupt to heights of over 60 feet from 1993 to 1996. It became almost dormant in 1997 and has remained very quiet ever since. Blue Geyser's last observed eruption was in February of 1997.

Brilliant Pool is a hot spring in the Upper Geyser Basin of Yellowstone National Park in the United States. Brilliant Pool is part of the Daisy Group and is interconnected with the Daisy and Splendid Geysers. Prior to an eruption by Daisy or Splendid, the pool is filled. When Daisy erupts, the water level in Brilliant Pool drops a few inches then is refilled as Daisy ...

Broken Egg Spring is located off Firehole Lake Drive in Yellowstone National Park, Wyoming.

Castle Geyser is a cone geyser in the Upper Geyser Basin of Yellowstone National Park. It is noted for the particularly large geyserite sinter deposits, which form its cone. These deposits have been likened in appearance to a castle. When the geyser was given this name in 1870, the top edges of the structure resembled the typical profile associated with the modern con...

Cauliflower Geyser is a deep clear blue pool surrounded in raised geyserite nodules that resemble the texture and shape of cauliflower. The water level sits just below the major geyserite deposits, but overflows the pool to an outwash channel filled with orange thermophiles. Recently, Cauliflower Geyser has a fairly narrow eruption interval of 30–45 minutes, but...

There is a geyser on an abandoned Chaffin Ranch near San Rafael Road south of Green River. It does not alway geyser but has a colorful collection pool.  The geyser was created during an attempt to drill a well.

Cistern Spring and Steamboat Geyser are linked underground. During a major eruption of Steamboat, the water in Cistern Spring's pool drains. Normally, Cistern is a beautiful blue pool from which water continually overflows. It is quite creative, depositing as much as 1/2 inch (12mm) of grayish sinter each year. By comparison, Old Faithful Geyser and many other thermal...