The reason the zones exist at all is simple. Altitude drives temperature and rainfall. As you gain height the air cools steadily, and the rain that soaks the lower forest thins out higher up. So life is richest in the warm, wet middle of the mountain and grows sparser in every direction from there, until almost nothing survives at the top.
3 days ago5 min read
Expert guides, honest stories, practical advice, and the philosophy behind why we climb the way we do. From the trails to the summit — and the communities in between.