Volcanic Springs

Geysers, Hot Springs,
Mud Pots, and Fumaroles

Firehole Lake Drive, White Dome Group

White Dome Group is traversed by Firehole Lake Drive a few hundred yards northwest of Great Fountain Group. It is dominated by the large geyserite cone of White Dome Geyser.

Despite of its impressive, 3.5 m (12 feet) high cone, which is one of the largest in Yellowstone, White Dome Geyser generates only medium sized eruptions of about 9 m (30 feet) height. Nevertheless it's well worth waiting for, since the interval is on average only 30 minutes long. However, interval durations are quite variable. Its a little bit strange, but every time I come across White Dome Geyser the smooth white and red sinter coating conveys the impression of sugar icing to me.

White Dome Geyser, erupting and quiet (roll mouse over picture):

White Dome Geyser Yellowstone

White Dome Geyser Yellowstone
On the right (east) side of the road a small group of geysers catches far less attention. Most likely the dark grotto of Cave Spring may tempt some visitors to take a first closer look. Cave Spring is a perpetual spouter, but activity takes place deep down and is impossible to see from the road.

Cave Spring:

Cave Spring Yellowstone

Cave Spring Yellowstone
At the northwest (left) side of Cave Springs opening Crack Geyser is located within a rough geyserite structure. If not active, the vent is hard to identify, and activity is quite rare.

Crack Geyser on the left side of Cave Spring:

Crack Geyser and Cave Spring Yellowstone

Crack Geyser and Cave Spring
The feature in front of Crack Geyser next to the road is called Pebble Geyser. Eruptions have been recorded for the last time in 2003.

Pebble Geyser:

Pebble Geyser Yellowstone

Pebble Geyser
To the north the two vents of Gemini Geyser complete the small cluster of features. The activity of Gemini varies from nearly daily to years of dormancy. Three feet to the right of Geminis right vent, directly beyond the edge of the runoff, the small vent of UNNG-WDG-2 is visible, which was active in 1993.

Gemini Geyser and UNNG-WDG-2:

Gemini Geyser and UNNG-WDG-2 Yellowstone

Gemini Geyser

 Back to top

Content and photos on this homepage are protected by law. You may save photos on your Computer, but it is not allowed to use them in any other case without permission of the author. If you want to use photos originated by the author, please ask. Please respect licence conditions of photos of third parties on this homepage.