
1) Impact crater of Finland 2) Lake of Petäjävesi
Found on
https://www.crosswordclues.com/clue/karikkoselkä

Karikkoselkä is a lake formed in an impact crater in Petäjävesi, Finland. Karikkoselkä is located approximately 30 km east from the centre of Keurusselkä, a much older and larger impact crater. Most lakes in the region are elongated in northwest-southeast direction due to glaciation, but Karikkoselkä is strikingly round. Many shatter cones, ...
Found on
http://en.wikipedia.org/wiki/Karikkoselkä
No exact match found.