Omberg () is a forested mountain in western

Östergötland County Östergötland County () is a county or '' län'' in southeastern Sweden. It has land borders with the counties of Kalmar to the southeast, Jönköping to the southwest, Örebro to the northwest, and Södermanland to the northeast. It also has a ...

in Sweden. Administratively it is split between the municipalities of

Ödeshög Ödeshög () is a locality and the seat of Ödeshög Municipality, Östergötland County, Sweden Sweden, formally the Kingdom of Sweden, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. It bo ...

in the south and

Vadstena Vadstena () is a locality and the seat of Vadstena Municipality, Östergötland County, Sweden Sweden, formally the Kingdom of Sweden, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. It bo ...

in the north. It lies between

Lake Vättern A lake is often a naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land. Lakes lie completely on land and are separate from t ...

and Lake Tåkern.

Alvastra Abbey Alvastra Abbey (''Alvastra klosterruin'') was a Cistercian monastery located at Alvastra in Östergötland, Sweden. History Alvastra monastery was founded in 1143 by French monks who belonged to the Cistercian Order. A number of monks and lay ...

lies at its foot. Geologically Omberg is a horst, a fault-bounded and uplifted block of

bedrock In geology, bedrock is solid rock that lies under loose material ( regolith) within the crust of Earth or another terrestrial planet. Definition Bedrock is the solid rock that underlies looser surface material. An exposed portion of bed ...

. The western cliff of Omberg has been indicated as an ''

ättestupa is a name given to a number of precipices in Sweden. The name supposedly denotes sites where ritual senicide took place during pagan Norse prehistoric times, whereby elderly people threw themselves, or were thrown, to their deaths. According ...

'' in folk history.

References

Nature reserves in Sweden Tourist attractions in Östergötland County Landforms of Östergötland County Mountains of Sweden Horsts (geology) Ödeshög Municipality Vadstena Municipality {{Östergötland-geo-stub