Weer Rock. On the western slope. The name does not appear on the map, but it is said to have been agreed upon as an honor to J. H. Weer, of Tacoma, who has done extensive exploration work upon and around the mountain. He was leader of The Mountaineers, in 1915, when the first large party encircled the mountain at snow-line.
White River. This river drains most of the glaciers on the northeastern slopes of the mountain. With a grand sweep around the mountain, the river flows through its valley to unite with the Black River near Seattle, becoming the Duwamish River, which empties into Puget Sound at Seattle Harbor. Its name came from the glacial character of the water.
White River Park. Lying between Sourdough Mountains and Sunrise Ridge in the northeastern part of the Park.
Whitman Glacier. On the eastern slope of the mountain flowing from the side of Little Tahoma. The name is in honor of Doctor Marcus Whitman, who gave his life as a missionary among the Indians. He, his wife, and twelve others were murdered by the Indians near Walla Walla in 1847. The ridge of rocks east of the glacier is called Whitman Crest.
Wigwam Camp. In Indian Henrys Hunting Ground, on the southwestern slope of the mountain. For several years a tent and log-cabin camp has been maintained here by George B. Hall for the accommodation of visitors. Elevation, 5,300 feet above sea level.
Willis Wall. On the northern face of the mountain at the head of Carbon Glacier. The great vertical cliff, 3,600 feet high, over which avalanches of snow crash throughout the summer months, is one of the attractive features of the great mountain. It was named in honor of Bailey Willis, on account of his extensive explorations in 1883.
Williwakas Glacier. On the southeastern slope of the mountain, flowing from Paradise Glacier. The stream draining the glacier is known as Williwakas Creek. Origin of name not ascertained.
Wilson Glacier. On the southern slope, above Nisqually Glacier. It was named in honor of A. D. Wilson, who, with S. F. Emmons, made the second ascent of the mountain in 1870.
Windy Gap. In the northern portion of the Park, between the ridges of Chenuis and Crescent Mountains.
Winthrop Glacier. On the northern slope, where its head joins that of Emmons Glacier. It is named in honor of Theodore Winthrop, who passed close by the mountain in 1853 and recorded his observations in his book entitled "The Canoe and the Saddle." The same name is given to a creek that drains this glacier into White River. The glacier was formerly mapped as White Glacier.