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,
Pat Mora have books, celebrations and materials for "Dia" to include "all languages spoken in the United States." In 2004, the Library Service to Children's Board of the American Library Association became the "national home" to "Dia". Mora says, "If we want our nation to be a country of readers...[we] need to work together to inspire communities in nurturing reading families." Mora has received Honorary Doctorates in Letters from North Carolina State University and SUNY Buffalo and is an Honorary Member of the American Library Association. She was a recipient of a Civitella Ranieri Fellowship to write in Umbria, Italy. She was