VANTAA, FINLAND—A series of surveys in northern Finland have found pits used for trapping deer, pottery, and stone tools, including a 2,000-year-old spear tip or knife that had been uncovered from a sand pit by high winds. “It’s amazing to find an intact object, because when we map ancient artifacts we usually only find fragments generated during the creation of these objects, in other words waste,” archaeologist Sami Viljanmaa of Metsähallitus, Finland’s forestry service, told Yle Uutiset. The researchers also found prehistoric dwellings along a lake near the border guard station at Munnikurkkio.