Old Faithful

Old Faithful is the most famous geyser on the world.

Old Faithful is not the largest geyser but it is one of the most frequent. It is not the most regular geyser but has gotten its name because it is can be predicted within 45-110 minutes with the average eruption being about 76 minutes. A geyser is a special type of hot spring that erupts periodically.

This is a view of Old Faithful just prior to an eruption.

 

Another view (right) of Old Faithful during an eruption.

 

 

 

 

The photo below shows Geyser Hill and several of the other geysers located near Old Faithful.