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,
Alberto J. Mora Joint Task Force Guantanamo commander, Major General Geoffrey Miller, who had also been subsequently sent to Abu Ghraib to "Gitmo-ize" it. Mora is a Senior Fellow at the Carr Center for Human Rights of the John F. Kennedy School of Government at Harvard University. For his efforts, Mora was honored with the John F. Kennedy Profile in Courage Award in 2006, which is administered by the John F. Kennedy Library Foundation. Alberto J. Mora Alberto J. Mora (born 1951) is a former General Counsel of the Navy. He led an effort within the Defense Department to oppose the legal theories