In the mountains is a book written by Richard Northcott. It is about life in the mountain. There are many types of mountains on Earth. Some of them are covered with thick green forests while the tops of others are covered with ice and snow. It is very cold there. There are some dry and hot mountains. Many rivers begin high in the mountains. This is an amazing part of nature. At high altitude, the air is thin, and you have to get used to it. Are there mountains in the area where you live?