Answer was Old Faithful
Clue 1 roughly translates to the Waters of Rūaumoko, the Maori god of Earthquakes. He was the closest I could find to a geothermal thing, so I had him in it.
Clue 2 was talking about how the word Geyser comes from old Norse, and both the Norse and Maori lived partially in areas with a lot of active geysers.
Clue 3 is how there's now a bunch of moons with geysers discovered on them in the solar system, however the geyser we're talking about is only a continent / ocean away from the Norse and the Maori, i.e. in America