The geyser, for example, remained dormant between 1911 and 1961 before suddenly making a living noise again.
And if it does break out, the spectacle is memorable, as they can throw hot water and steam 300ft into the air, between three and 40 minutes at a time.
From March 2018, Steamboat is rumbling again after a dormancy of three and a half years.
That year, the geyser erupted a total of 32 times, and then 48 times in 2019, and again 48 times in 2020.
Michael Poland, geophysicist of the US Geological Survey (USGS), said: “And just like last year, the shortest and longest periods between eruptions were about three and 17 days, respectively.”
The geyser’s sudden eruption of activity has left some doubting whether it could be a sign of something more sinister brewing underground.