Exploration of the Moon invention of the telescope, an increasing number of people began to recognise the Moon as a sphere, though many believed that it was "perfectly smooth". In 1609, Galileo Galilei drew one of the first telescopic drawings of the Moon in his book and noted that it was not smooth but had mountains and craters. Later in the 17th century, Giovanni Battista Riccioli and Francesco Maria Grimaldi drew a map of the Moon and gave many craters the names they still have today. On maps, the dark parts of the Moon's surface were called "maria" (singular "mare") or seas, and the
Craters of the Moon (geothermal site) Karapiti Blowhole followed a similar pattern. In the 1950 it was 12 MW. It increased to a maximum of about 38 MW during the mid 1960s. Then it dropped to about 7 MW in 1978. The blowhole finally ceased altogether in 1987. Craters of the Moon is a steamfield with a total of about of heated ground. It has an average altitude of 435 m. It has – of course – craters, but it also has fumaroles (“blowholes”) and a mudpool. Vegetation around the area of the Craters of the Moon is quite uncommon. All the craters at The Craters