The frozen Irkut River runs through Tunkinskiy National Park in southern Siberia

iss074e0247464 (Feb. 2, 2026) --- The frozen Irkut River runs through Tunkinskiy National Park in southern Siberia, forming the Tunka Valley, which is surrounded by mountains in this wintry, biodiverse landscape. The International Space Station was orbiting 262 miles above, between Lake Baikal and Lake Khövsgöl, when this photograph was taken.