We walked out the trail from Old Faithful and there was a bunch of people sitting by Grand Geyser. We were in the window of eruption time and the old geyser watcher was on alert. We walked on and cam… Full review by lilirishstar
Apr 22, 2024
Grand Geyser erupts much less frequently than Old Faithful with a larger window of error. When I swung by this geyser, the sign said it erupts every seven hour and fifteen minutes, but it can be as m… Full review by jehenson81
Jan 20, 2023
Unlike Old Faithful, the Grand Geyser is not as predictable; however, it is so worth seeing erupt. It releases spurts of strong activity rather than a steady stream, but oh its eruption is amazing in… Full review by Debra R
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