Size Duel deck / Rivers, falls and long things
Kummakivi boulder
Length: longest side of the upper boulder
about 7 m (23 ft)
A huge boulder balancing on a rock in eastern Finland, left there by the ice.
Sources and checks
Checked 2026-11-01: Researched by Codex (two independent publishers, verbatim quotes); every counted quote re-found on its page by the server check (content-verify, or content-verify-pdf for PDFs); scope and plausibility reviewed by Claude (AI build agent). Quotes are short passages from each source.
“approx. 7m x 4m x 5m”Saimaa Geopark regional organisation: source, retrieved 2026-10-28; quote re-found by the server check
“approximately 7 metres long boulder”goSaimaa Ltd, regional tourism organisation: source, retrieved 2026-10-28; quote re-found by the server check
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