Volcanic-like features were found by the Cassini NASA spacecraft in the polar regions of Saturn's moon Titan. "The close connection of the proposed volcanic crater to polar lakes is consistent with a volcanic origin due to explosive eruptions, followed by a collapse like Maars or Calderas," said scientist Charles A. Wood.
"The apparent freshness of some craters can mean that volcanism on Titan was active relatively recently or is still continuing today," added Wood.
Features such as nested collapses, elevated ramparts, atriums, and islands indicate that some of the small depressions in the North Pole region of Titan are volcanic collapse craters, according to an article that "appears" from morphological evidence for volcanic craters near the North Pole region of Titan in the Journal of Geophysical Research: Planets. Some similar depressions also occur near the south pole of Titan.
Many landforms on Saturn's moon Titan are similar to those on Earth. This was revealed by the Cassini mission. There are sand dunes, river valleys and lakes. These characteristics are due to temperature differences on the planet surface due to the heat of the sun.
"We have shown that there is also evidence of internal heat, which manifests itself on the surface as cryovolcanoes and results from the melting of the ice crust into liquid water that erupts on the surface of the titan," said Wood.
"These features are roughly round, with raised edges, and sometimes overlap. They match the shapes of other volcanic landforms on Earth and Mars that have been created by explosion, excavation, and collapse," added the scientist.