Celestine Pool:

Celestine Pool is, tragically, one of the hot springs that has claimed a human life. As in many of the pools around Yellowstone, the water in this pretty pool is usually within a few degrees of boiling. There is little hope of surviving a fall into such a pool.

Clepsydra Geyser:

Clepsydra is a pretty geyser often erupting to 45 feet. It was named for a mythical water clock. In the early history of the park, it erupted with clock like regularity. After the 1959 Hebgen Lake Earthquake it went into a "wild phase." Since then it has erupted almost constantly, only occasionally stopping after an eruption of nearby Fountain Geyser.

Fountain Geyser:

Fountain is a beautiful geyser. Its 30 minute eruptions can reach over 75 feet and are characterized by highly energetic bursts that wildly explode in all directions. It is a very fun geyser to watch. Since Morning Geyser is usually dormant, Fountain is usually the major performer in the area. It usually erupts every 4 to 15 hours.

Fountain Paint Pots:

The consistency of the Fountain Paint Pots, like all paints pots, is highly affected by recent rain and snow fall. When there is a lot of rain, the paint pots are soupy. As they dry out they become thicker an thicker. The Fountain Paint Pots increased dramatically in size following the 1959 Hebgen Lake earthquake. In fact, a trail and parking lot had to be moved. You can still see some of the old structure along one edge of the paint pots.

Fumaroles:

There are a number of fumaroles, steam vents, located at the higher elevations in the Fountain area. Notice how the hot pools and geysers, the wettest features, are located at the lowest levels. The paint pots are located at an intermediate level and the fumaroles, the driest features, are located at the highest level.

Jet Geyser:

Jet is a frequent performer erupting every 7 to 30 minutes to 20 feet. It erupts from at least five vents in an elongated cone. Jet shows its connection to Fountain Geyser by erupting more frequently during Fountains eruptions.

Leather Pool:

Leather Pool gets its name from the thick brown bacterial mat that is often found in its lukewarm warm waters.

Morning Geyser:

Morning Geyser is the largest geyser in the Fountain area and one of the largest geysers in the world. Unfortunately, it is seldom active. Its last period of activity lasted for one week in 1994. When active it can erupt as often as every 4 hours to 200 feet high and 100 feet wide. Eruptions last up to 1/2 hour.

Red Spouter:

Red Spouter may sometimes look like a small geyser but it is actually a fumarole that sometimes gets drowned by a puddle of water that forms near its vent.

Silex Spring:

Silex Spring is a beautiful blue hot spring. Sometimes, it is possible to see steam jetting into the pool from the vent at the bottom of the pool. This steam quickly collapses as it hits the cooler water of the pool.

"Sizzler":

Sizzler is a small geyser of relatively recent origin. Until a few years ago, it erupted from cracks in the sinter. More recently it has started forming a crater. It was interesting to watch the change from what looked like solid ground to a gaping hole. This is one of the dangers of walking off trail in the geyser basins. You never know when a new hole will open up.

Spasm Geyser:

Spasm is a small geyser right next to the boardwalk.

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