Legolas with keen eyes and survives the snowy trek

Gandalf walked in front, and with him went Aragorn, who knew this land even in the dark. The others were in file behind, and Legolas whose eyes were keen was the rearguard. The first part of their journey was hard and dreary, and Frodo remembered little of it, save the wind. For many sunless days an icy blast came from the Mountains in the east, and no garment seemed able to keep out its searching fingers. Though the Company was well clad, they seldom felt warm, either moving or at rest. They slept uneasily during the middle of the day, in some hollow of the land, or hidden under the tangled thorn-bushes that grew in thickets in many places. In the late afternoon they were roused by the watch, and took their chief meal: cold and cheerless as a rule, for they could seldom risk the lighting of a fire. In the evening they went on again, always as nearly southward as they could find a way.

The Fellowship of the Ring, Book Two, Chapter 3: The Ring Goes South.