Bronze-age burrow grave in Helsinki. © Photo: HAM Helsinki Art Museum Pronssikautinen hauta / Bronze-age burrow grave Artist Tuntematon/Okänd/Unknown Humallahdenpuisto, Meilahti, Helsinki This bronze-age (some 3000 year-old) burrow grave is located in the Humallahden puisto park near the crossing of Seurasaarentie and Paciuksenkatu streets. The grave, made by piling stones, has been excavated and human bones were found inside. A plaque has been placed by the grave, explaining its history. Read more.. At map