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,
Stones of Mora Stones of Mora The Stones of Mora () is a historic location in Knivsta where Swedish kings were elected until 1457. The origin of the tradition is unknown. The name "Stones of Mora", "Mora stenar" in Swedish, was originally in singular, "Mora sten" "Stone of Mora", and referred to a "king stone" on which the newly elected king stood after the election. Later monuments in stone around the Stone of Mora, commemorating different elections, changed the name to the plural form. Another name often used referring to the place where the king was elected was "Mora äng", "Meadow of Mora".