In 1813, the Russian-American Company frigate Neva wrecked off Alaska’s Kruzof Island. Of the 28 people who made it to shore near the city of Sitka, 26 survived for almost one month in the winter snows. But how did they do it? Few accounts mean that survivors’ struggles have been a mystery, until now. A team of researchers has been excavating what it believes to be the survivors’ camp, providing clues into their tale of survival, LiveScience reports. In its excavation, the team has found gun flints, which may have been used to start fires, and whittled-down musket balls that could have been used in smaller weapons. Further excavations may help verify the shipwreck’s location and confirm the site of the camp, the scientists say.