Siljan Ring Siljan Ring The Siljan Ring () is a prehistoric impact crater in Dalarna, central Sweden. It is one of the 15 largest known impact craters on Earth and the largest in Europe, with a diameter of about . The impact that created the Siljan Ring occurred when a meteorite collided with the Earth's surface during the Devonian period, about 376.8 ± 1.7 Ma. This coincides around the first Devonian extinction, the Kellwasser Event or Late Frasnian extinction at 376.1 Ma ± 1.6 Ma. The effects of the impact can clearly be seen in the bedrock in the area. The Cambrian,
Gotzone Mora Gotzone Mora Gotzone Mora (b. Bilbao in 1948) is a Spanish social-democratic politician. She was a member of the Basque Socialist Party (""Euskadiko Alderdi Sozialista – Euskadiko Ezkerra" / "Partido Socialista de Euskadi – Euskadiko Ezkerra""/ PSE-EE) till March 2008 when she was expelled from it for advocating support for the People's Party. Since 2008 she has been a member of the People's Party (""Partido Popular"" / PP). Of humble origins, she has become knowledgeable on human migration and global social processes. She has been a sociology reader in the University of the Basque Country in Spain. She was an