Photo by Haynes from the Gregory Jones Collection.
Geysers are fragile, temporary, geologic features.
Nature itself can destroy geysers. Some geysers die because their water or heat source change, move or disappear. This all is part of the natural processes that governs geothermal features. Man, however, sometimes hastens the demise of geysers. Debris thrown into their vents can block the throat of a geyser and block the eruptions.