In Russia’s northeastern Sakha-Yakutia region, nearly 8,470 kilometers east of Moscow, ice both provides a living and makes for a daunting barrier. The region’s supply corridor, the Lena River, is iced over for six months a year. That means that workers need to know how to cut through thick ice in winter to repair ships for the spring. Unknown Russia traveled to the town of Zhatay to learn how it is done.