PointofInterestRoadSigns.com - Yellowstone National Park - White Dome Geyser


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Yellowstone National Park - White Dome Geyser


Location of sign - the Firehole Lake Drive in Yellowstone National Park


Photo taken June 2008

White Dome Geyser, White Dome Geyser sign, Norris Geyser Basin Yellowstone National Park  

Close-up view of sign


White Dome Geyser, White Dome Geyser sign, Norris Geyser Basin Yellowstone National Park

Wide view of sign


Text of sign:


White Dome Geyser


White Dome Geyser's beautifully shaped cone is many centuries old and is still growing with each eruption.  For hundreds of years,

thermal waters has been building the cone that you see today - one of the largest in Yellowstone.


Formation of a Cone


Splashing and spraying during each eruption, thermal water is still building White Dome.  After travelling underground through silica-

rich volcanic rhyolite, the water deposits silica as it splashes over the cone, forming spiny, bulbous masses of geyserite.  More and

more bumps form on this gnarly, ancient cone as White Dome grows older and more massive.


An array of minerals and thermophiles-bacteria and algae that live in thermal water - creates a tapestry of color around White 

Dome's vent.


Fountain or Cone?


Fountain Geysers


Fountain Geysers, like Great Fountain Geyser behind you, erupt through a large vent with a wide opening that can look like a hot

spring.  Water bursts in many directions.


Cone Geysers


White Dome and other cone geysers erupt in a narrow jet of water through a slim vent, usually from a cone-shaped formation.


Graphics on the sign


In addition to the text there is a closeup picture of themaphiles and a larger picture of White Dome Glacier.


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