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,
Mora, New Mexico de Cristo Mountains where an isolated Spanish-speaking community (based on Mora) confront a threatening world of change. The settlement is mentioned in Willa Cather's 1927 historical novel "Death Comes for the Archbishop"(Book Two, Chapter 2), about the establishment of the Roman Catholic Archdiocese of Santa Fe. Mora was also in Louis L'Amour's Western novel "The Daybreakers", in which the character Orrin Sackett is the fictional marshal of Mora. Mora, New Mexico Mora or is a census-designated place in, and the county seat of, Mora County, New Mexico, United States. It is located about halfway between Las Vegas, and Taos on