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  Dome Geyser
Feature Type: Geyser
Geyser/Spring Type: Fountain geyser

Basin
Upper Geyser Basin
Complex
Geyser Hill

Dome Geyser sits at the highest altitude of any of the geysers on Geyser Hill. Dome's active periods usually occur shortly after the SMax of the Geyser Hill Wave but do not occur after every SMax. In fact, active periods rarely occured more than once or twice per month in recent years. No active phases were reported from the end of January 2004 through the beginning of February 2006.
Active periods last 24-48 hours. During an active period, Dome has a series of bursting type eruptions. Intervals between individual eruptions within a series are shorter near the beginning of the active phase (about 12-15 minutes) than they are in the later stages of an active phase (35-45 minutes).
The largest eruptions usually occur at the start of the series and can, on rare occasions, reach 20 feet. After that, most eruptions are small, with water reaching only 1-3 feet above the top of the cone.
Although it has sometimes been claimed that Dome may be a bad omen for Giantess, Giantess has erupted several times in recent years during Dome's active phase.

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