Almost but I was thinking I would have a better name. Like Catalyst Geyser.
Also that would probably be a cone.
Explosive Geyser
Type: Fountain
Originally an inactive hot spring, in the year 455, a large earthquake shook the Universe Sandbox Geyser Basin, causing changes in geologic activity in and around the basin. After the earthquake, this hot spring began filling up with water and overflowing. With temperatures of 117 deg. C, the scalding hot steam from this geyser causes impressive eruptions on average every 9 days for about an hour to 75 minutes. Sometimes, shortly after an eruption of Spam Geyser, Explosive can be seen splashing jets up to 3 meters high, even when Explosive wouldn't normally be ready to erupt. These minor eruptions can cause the major eruptions, which normally jet water up to 45 meters, to be less powerful. These large eruptions have deposited a large amount of sinter around the pool, the heated water carrying it killing several nearby trees.
Explosive Geyser was named for the noises that can be heard coming from the underwater vent. Similar to Sawmill, located in Earth's Upper Geyser Basin, it makes a thumping sound, except it is several times louder. It also frequently makes what has been described as a "loud growling sound" during its eruptions.
To detect an oncoming eruption, watch for an early eruption of Spam Geyser, if this eruption persists for more than 2 eruption cycles (about 15 hours), it is likely that an eruption of Explosive Geyser is going to be soon. Although larger and also connected, unlike Spam, Explosive Geyser does not affect Srsbizniz.
Several other minor geysers affected by Explosive are located nearby, including Vatallus and Praetiam.