🔈 Sound On Ice transforms Yellowstone each winter, halting waterfalls in their tracks, coating trees near thermal features, and covering lakes, ponds, and some rivers. Even the large Yellowstone Lake cannot escape its grasp, freezing over between late December and early January each year. Ice thickness varies from a few inches to more than two feet. As the ice reacts to changing temperatures, Yellowstone Lake may be heard singing a rare wintertime song. To listen to another lake song, visit htt