A strange, sweet, rustling, chattering noise- and yet not so strange, for he knew he'd heard it before - if only he could remember where! Then all at once he did remember. It was the noise of running water. All round them, though out of sight, there were streams chattering, murmuring, bubbling, splashing and even (in the distance) roaring. And his heart gave a great leap (though he hardly knew why) when he realised that the frost was over. And much nearer there was a drip-drip-drip from the branches of all the trees. And then, as he looked at one tree he saw a great load of snow slide off it and for the first time since he had entered Narnia he saw the dark green of a fir tree.
And now the snow was really melting in earnest and patches of green grass were beginning to appear in every direction. Unless you have looked at a world of snow as long as Edmund had been looking at it, you will hardly be able to imagine what a relief those green patches were after the endless white.
Every moment the patches of green grew bigger and the patches of snow grew smaller. Every moment more and more of the trees shook off their robes of snow. Soon, wherever you looked, instead of white shapes you saw the dark green of firs or the black prickly branches of bare oaks and beeches and elms. Then the mist turned from white to gold and presently cleared away altogether. Shafts of delicious sunlight struck down onto the forest floor and overhead you could see a blue sky between the tree-tops.
Soon there were more wonderful things happening. Coming suddenly round a corner into a glade of silver birch trees Edmund saw the ground covered in all directions with little yellow flowers- celandines. The noise of water grew louder. Presently they actually crossed a stream. Beyond it they found snowdrops growing.
Only five minutes later he noticed a dozen crocuses growing round the foot of an old tree- gold and purple and white. Then came a sound even more delicious than the sound of the water. Close beside the path they were following a bird suddenly chirped from the branch of a tree. It was answered by the chuckle of another bird a little further off. And then, as if that had been a signal, there was chattering and chirruping in every direction, and then a moment of full song, and within five minutes the whole wood was ringing with birds' music, and wherever Edmund's eyes turned he saw birds alighting on branches, or sailing overhead or having their little quarrels.
There was no trace of the fog now. The sky became bluer and bluer and now there were white clouds hurrying across it from time to time. In the wide glades there were primroses. A light breeze sprang up which scattered drops of moisture from the swaying branches and carried cool, delicious scents against the faces of the travellers. The trees began to come fully alive. The larches and birches were covered with green, the laburnums with gold. Soon the beech trees had put forth their delicate, transparent leaves. As the travellers walked under them the light also became green. A bee buzzed across their path.
"This is no thaw." said the Dwarf, suddenly stopping. "This is spring."
-C.S. Lewis, The Lion, the Witch, and the Wardrobe, pg. 114-118