to April and heavy precipitation from May to September. A large part of this precipitation falls as snow. The west peak is the wettest place in mainland USA. See also List of mountain peaks of North America List of mountain peaks of the United States List of Ultras of the United States List of highest points in Washington by county References External links The Mountaineers: 1920 Outing to Mt. Olympus - University of Washington Library The Mountaineers Photography - University of Washington Library Mountains of Washington (state) Highest points of United States national parks Mountains of Jefferson County, Washington Olympic Mountains Landforms of Olympic National Park