Aurum Geyser, Cone geyser in Yellowstone National Park, United States.
Aurum Geyser is a cone-shaped geyser in Yellowstone National Park that shoots hot water through a vent built up by mineral deposits over time. The eruption can reach approximately 25 feet (8 meters) high and results from water heated under pressure in underground channels beneath the cone.
Before the 1983 earthquake, eruptions occurred irregularly and with limited force, but seismic activity restructured the underground plumbing beneath the cone. This shift shows how earthquakes can reshape geothermal systems and create new eruption patterns in the region.
The geyser is part of a connected network of hot springs on Geyser Hill where eruptions of one feature can trigger activity in others nearby. Visitors notice how this relationship shapes the behavior of the surrounding geothermal features.
Watch the two small vents beside the main cone, as they begin to bubble and steam before the main eruption occurs. These preliminary signs give you a sense of when the full display is about to happen.
Eruption frequency changes with the seasons and water availability in the surrounding terrain. During wet periods the feature erupts more regularly, while dry seasons create less predictable activity that can surprise observers.
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