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,
European Cross Country Championships European Cross Country Championships The European Cross Country Championships is an annual international cross country running competition. Organised by the European Athletic Association, it is the area championships for the region and is held in December each year. The championships was inaugurated in 1994 in Alnwick and the venue for the championships changes each year. Unlike the World Championships for the sport, the European Cross Country Championships consists of six races in age categories, with separate senior, under-23, and junior races for both men and women. There are individual and national team medals awarded in each race. In the team