Kummakivi
Sign in to saveAlso known as The Strange Rock, The Odd Stone
thumb|Kummakivi in September 2015. thumb|Another angle with person for scale
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thumb|Kummakivi in September 2015. thumb|Another angle with person for scale
Kummakivi () is a large balancing rock in Ruokolahti, Finland. The boulder is a glacial erratic that lies on a convex bedrock surface with such a small footprint that it almost appears to be moving, but so firmly that it cannot be rocked with human force.
Excerpted from Wikipedia’s “Kummakivi” article, available under the CC BY-SA 4.0 licence.