Iceland is volcanically and geologically active. The tectonic structure of Iceland is characterized by various seismically and volcanically active centers. The Volcanic Eifel is still volcanically active today. A volcanic belt is a large volcanically active region. Indonesia is a volcanically active country, containing numerous major volcanoes. Italy is a volcanically active country, containing the only active volcanoes in mainland Europe. Near Cody, it runs through a volcanically active region of fumaroles known as Colter's Hell. La Palma is currently the most volcanically active island in the Canary Islands Archipelago. Mount Rinjani has also been volcanically active, forming its own crater, Segara Muncar. The region which today is Germany was in a volcanically active zone during the Eocene. Goma is on the volcanically active Great African Rift Valley. The area is very volcanically active, like the rest of Iceland. Unlike any of the planets mentioned, Io is continuously volcanically active. The authors consider this age makes it possible that Mars is not yet volcanically extinct. Grande Comore is the youngest island and is still volcanically active.