{{short description|Mountain in Washington (state), United States}} {{Use mdy dates|date=February 2026}} {{Use American English|date=February 2026}} {{Infobox mountain | name = Mount Bullen | image = Bullon mtn.jpg | image_caption = North aspect | elevation_ft = 5978 | elevation_ref = <ref name="gnis"/> | prominence_ft = 920 | prominence_ref = <ref name="pb">{{cite peakbagger|24830|Mount Bullon, Washington}}</ref> | isolation_mi = 1.44 | isolation_ref = <ref name="listsofjohn">{{cite web|url=https://listsofjohn.com/peak/50455|title=Bullon, Mount - 5,980' WA|website=listsofjohn.com|accessdate=2022-03-29}}</ref> | parent_peak = Whitehorse Mountain (6,850 ft)<ref name="listsofjohn"/> | etymology = Chauncey Bullen | map = Washington#USA | map_caption = Location in Washington | mapframe = yes | mapframe-zoom = 8 | mapframe-caption = Interactive map of Mount Bullen | country = United States | state = Washington | region = Snohomish | region_type = County | part_type = Protected&nbsp;area | part =Boulder River Wilderness | range = North Cascades<br />Cascade Range | coordinates = {{coord|48.1955052|N|121.6986580|W|type:mountain_region:US-WA_scale:100000_source:gnis|format=dms|display=inline,title}} | coordinates_ref = <ref name="gnis"/> | topo = USGS ''Whitehorse Mountain'' | first_ascent = 1936 by Hermann Ulrichs | easiest_route = {{YDS|2}} scrambling<ref name="listsofjohn"/> }}

'''Mount Bullen''' is a {{convert|5978|ft|m|adj=mid|-elevation}} mountain summit located at the western edge of the North Cascades, in Snohomish County of Washington state.<ref name="gnis"> {{cite gnis | id = 1517087 | name = Mount Bullen | accessdate = 2022-03-29}}</ref> It is situated {{convert|20|mi|km|abbr=on}} east of the community of Arlington, Washington, in the Boulder River Wilderness, on land managed by Mount Baker-Snoqualmie National Forest. Nearby neighbors include line parent Whitehorse Mountain, {{convert|1.44|mi|km|abbr=on}} to the northeast and Three Fingers, {{convert|1.84|mi|km|abbr=on}} to the south. Precipitation runoff from the mountain drains into headwaters of the Boulder River. Topographic relief is significant as the southeast aspect rises {{convert|2,000|ft|m|abbr=off|sp=us}} above Bullen Lake in approximately one-half mile, and the west aspect rises {{convert|4,200|ft|m|abbr=off|sp=us}} above Boulder River in two miles.

==History== This mountain is named for Chauncey Bullen, a government log scaler who died as a result of a log falling from a railroad car near Darrington in 1919.<ref>[https://tacomalibrary.contentdm.oclc.org/digital/collection/p17061coll4/id/6726/ Tacoma Public Library, Washington Place Names Mount Bullen]</ref><ref>''Decisions on Geographic Names in the United States'', 1990, US Department of the Interior, p. 27</ref> This geographical feature's "Mount Bullen" spelling was officially adopted in 1990 by the U.S. Board on Geographic Names.<ref name="gnis"/> Prior to that it was misspelled "Mount Bullon" which appears on older maps.

The first ascent of the summit was made in 1936 by Hermann F. Ulrichs<!--Q136488875--> and companion.<ref name="Beckey, Fred W 2008"/> Ulrichs wrote of the experience: "I felt as if we had joined Sisyphus and his rock in Hell."<ref name="Beckey, Fred W 2008"/>

==Climate== Mount Bullen is located in the marine west coast climate zone of western North America.<ref name="Beckey, Fred W 2008">Beckey, Fred W. Cascade Alpine Guide, Climbing and High Routes. Seattle, WA: Mountaineers Books, 2008.</ref> Most weather fronts coming off the Pacific Ocean travel east toward the Cascade Mountains. As fronts approach the North Cascades, they are forced upward by the peaks of the Cascade Range (orographic lift), causing them to drop their moisture in the form of rain or snow onto the Cascades. As a result, the west side of the North Cascades experiences high precipitation, especially during the winter months in the form of snowfall.<ref name="Beckey, Fred W 2008"/> Because of maritime influence, snow tends to be wet and heavy, resulting in high avalanche danger.<ref name="Beckey, Fred W 2008"/> During winter months, weather is usually cloudy, but due to high pressure systems over the Pacific Ocean that intensify during summer months, there is often little or no cloud cover during the summer.<ref name="Beckey, Fred W 2008"/> Due to its temperate climate and proximity to the Pacific Ocean, areas west of the Cascade Crest very rarely experience temperatures below {{convert|0|°F|°C}} or above {{convert|80|°F|°C}}.<ref name="Beckey, Fred W 2008"/>

==Geology==

The North Cascades features some of the most rugged topography in the Cascade Range with craggy peaks, ridges, and deep glacial valleys. Geological events occurring many years ago created the diverse topography and drastic elevation changes over the Cascade Range leading to the various climate differences. These climate differences lead to vegetation variety defining the ecoregions in this area.

The history of the formation of the Cascade Mountains dates back millions of years ago to the late Eocene Epoch.<ref name=Kruckeberg>{{cite book|last=Kruckeberg|first=Arthur|title=The Natural History of Puget Sound Country|publisher=University of Washington Press|year=1991}}</ref> With the North American Plate overriding the Pacific Plate, episodes of volcanic igneous activity persisted.<ref name=Kruckeberg/> In addition, small fragments of the oceanic and continental lithosphere called terranes created the North Cascades about 50 million years ago.<ref name=Kruckeberg/>

During the Pleistocene period dating back over two million years ago, glaciation advancing and retreating repeatedly scoured the landscape leaving deposits of rock debris.<ref name=Kruckeberg/> The U-shaped cross sections of the river valleys are the result of recent glaciation. Uplift and faulting in combination with glaciation have been the dominant processes creating the tall peaks and deep valleys of the North Cascades area.

==Gallery== <div style="max-width: 500px;"> <gallery mode="slideshow"> File:Mtbullon.jpg|Mt. Bullen centered at top, Whitehorse Mountain in upper right corner. Slopes of Three Fingers in foreground. File:Bullen mtn.jpg|Mt. Bullen seen from Whitehorse Mountain File:North Cascade Mountains from Everett, Washington.jpg|Left to rightː Whitehorse Mountain, '''Mount Bullen''', Three Fingers (centered), Big Bear Mountain, Liberty Mountain File:Lake Cavanaugh with White Horse Mountain.JPG|Whitehorse (left), Bullen (center), Three Fingers (right) seen from Lake Cavanaugh </gallery> </div>

==See also== {{stack|{{Portal|Mountains}}}} * Geology of the Pacific Northwest * Geography of the North Cascades

== References == {{reflist}}

==External links== * Weather forecast: [https://www.yr.no/en/forecast/daily-table/2-5788457/United%20States/Washington/Snohomish/Mount%20Bullen Mount Bullen] * Mount Bullen: [https://www.mountain-forecast.com/peaks/Mount-Bullen/forecasts/1821 Mountain Forecast]

{{DEFAULTSORT:Bullen}} Category:Mountains of Snohomish County, Washington Category:Mount Baker-Snoqualmie National Forest Category:One-thousanders of the United States Category:North Cascades of Washington (state)