A five km wide celestial body created Europe’s largest impact structure
Published 13 January 2017 Shatter cone, Siljan (Photo: Sanna Alwmark) A celestial body with a diameter of five kilometres crashed into the Earth’s surface, causing the formation of the so-called Siljan Ring in Dalarna, Sweden. The original impact crater was approximately 60 kilometres in diameter and the bedrock was covered by a layer of sediments 2.5 km thick when the projectile struck, according
https://www.lunduniversity.lu.se/article/five-km-wide-celestial-body-created-europes-largest-impact-structure - 2025-07-13