This geyser is very large and looks really cool. All the thermal features are nice but this one is more elaborate. Totally worth seeing. Full review by Flyingboy58
Apr 22, 2024
Castle Geyser is older than Old Faithful and built on an older platform. It has a unique cone shape from mineral build up and possibly trees that were growing in the area long ago, helping it get add… Full review by jehenson81
Jun 20, 2023
Castle Geyser has a huge volcano like cone, very different from the other Upper Basin geysers, even Old Faithful. It is said to be very old so accumulated a lot of material around it. Erupts a coup… Full review by K B
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