and speaking of hot water, did you know that the word for geyser actually comes from geysir, a famous icelandic geyser? (according to wikipedia, the word geysa means “to gush” in icelandic.)
geysers are a rare occurrence in the world, and notably temperamental, being affected by earthquakes which can trigger or make them go away. the science is complicated but the simplified mechanics resemble those of a pressure cooker… water gets superheated, pressure builds up, and then steam and water get released!
though the original geysir rarely erupts these days, its neighbour strokkur delights tourists every few minutes with an awe-inducing show of strength. due to the variable time between eruptions and how sudden they are, it’s hard to catch on a photo, but with some patience and space on your phone…