Path of an Air Wave
Around the emerald lake in Alaska’s Portage Valley, glaciers cling to mountains like globs of sourdough. And when the permafrost beneath a vertical ice field shudders or melts, the timeworn dough unsticks… The glacier slides, unbound, braiding ruts and jagged ridges in the mountain’s face. Gravel, roots, and silt fill every muddy wrinkle. We marvel…