Kummakivi, Glacial erratic in Ruokolahti, Finland.
The Kummakivi balancing rock measures 7 meters in length and rests on a curved bedrock surface with a small contact point.
Glacial forces during the last ice age transported and positioned this massive boulder between 11,000 and 12,000 years ago in southeastern Finland.
The Finnish name Kummakivi translates to strange stone, reflecting local interpretations of this natural formation through generations of observers.
The protected geological formation stands in a forest area in western Ruokolahti municipality, near the border of Puumala region.
Despite its large size and minimal contact area with the base rock, this boulder maintains perfect balance and resists any attempts to move it.
Location: Ruokolahti
Height: 5 m
Length: 7 m
Width: 7 m
Website: https://saimaageopark.fi/en/geosites/kummakivi-erratic
GPS coordinates: 61.49353,28.42919
Latest update: May 11, 2025 13:57
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