Bronze-age grave in Helsinki. © Photo: HAM Helsinki Art Museum Pronssikautinen hauta / Bronze-age grave Artist Tuntematon/Okänd/Unknown Kalkkipaadenpuisto, Lehtisaari, Helsinki The natural-stone burrow located in the Kalkkipaadenpuisto park is a bronze-age grave some 3000 years old. The grave has been exacavated. The monument is protected, and a plaque has been installed nearby, explaining the burrow’s history in Finnish and Swedish. The work doesn’t belong to the City of Helsinki’s art collection, which is managed by HAM. Read more.. At map