With further melting, refreezing, and increased weight from newer snowfall above, the snow reaches a granular recrystallized stage intermediate between flakes and ice known as firn.

随着进一步的融化、再结冰，以及上方新的降雪增加的重量，这些雪变成再次结晶阶段的颗粒状中间物，介于小薄片与冰块之间，被称作万年雪。