Kemijoki Oy (hydropower company) 30 years memorial stone, in front of Tervola city hall, Tervola, Finland. - Close-up of conglomerate boulder. Boulder was found when Taivalkoski hydropower plant was built in 1972-1976. Taivalkoski is in Keminmaa municipality.
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<span class="int-own-work" lang="en">Own work</span>