Puntukas is the second-largest boulder in Lithuania. It is situated some 5 kilometres (3.1 mi) south of Anykščiai on the left bank of the Šventoji River. It was believed to be the largest stone in Lithuania until the discovery of Barstyčiai stone in the Skuodas district in 1957.
In 1943, sculptor Bronius Pundzius engraved portraits and quotes from last wills of Lithuanian pilots Steponas Darius and Stasys Girėnas for the 10th anniversary of their deaths during the transatlantic flight with Lituanica.