Kärdla (also Kärdla astrobleme) is a

meteorite A meteorite is a rock (geology), rock that originated in outer space and has fallen to the surface of a planet or Natural satellite, moon. When the original object enters the atmosphere, various factors such as friction, pressure, and chemical ...

crater A crater is a landform consisting of a hole or depression (geology), depression on a planetary surface, usually caused either by an object hitting the surface, or by geological activity on the planet. A crater has classically been described ...

near the town of

Kärdla Kärdla (; ; ) is the only town on the island of Hiiumaa, Estonia. It is the capital of Hiiu County and the administrative center of Hiiumaa Parish. The Chairman of the District Council of Kärdla is Tõnis Paljasma. Geography Kärdla is located ...

Estonia Estonia, officially the Republic of Estonia, is a country in Northern Europe. It is bordered to the north by the Gulf of Finland across from Finland, to the west by the Baltic Sea across from Sweden, to the south by Latvia, and to the east by Ru ...

. It is in diameter and its age is estimated to be about 455 million years ( Late Ordovician). The crater is not exposed at the surface. Its formation has been associated with the breakdown of 100km asteroid, that might have also resulted in the Tvären and Lockne craters in Sweden among others.A rain of L-Chondrites in the Thorsberg quarry at Kinnekulle, southern Sweden-Thomas Müller TU Bergakademie Freiberg, Germany.

References

Impact craters of Estonia Ordovician impact craters Landforms of Hiiu County {{Earth-crater-stub