{{Short description|Mountain in Montana, United States}} {{Use mdy dates|date=January 2025}} {{Infobox mountain | name = Haystack Butte | image = Cloudy Haystack Butte.jpg | image_caption = Northeast aspect | elevation_ft = 7486 | elevation_ref = <ref name=pb>{{cite peakbagger|pid=27940|title=Haystack Butte, Montana|accessdate=2021-08-19}}</ref> | prominence_ft = 446 | prominence_ref = <ref name=pb/> | isolation_mi = 1.06 | isolation_ref = <ref name="listsofjohn">{{cite web|url=https://listsofjohn.com/peak/27308|title=Haystack Butte - 7,486' MT|website=listsofjohn.com|accessdate=2021-08-19}}</ref> | parent_peak = Mount Gould (9,557 ft)<ref name="listsofjohn"/> | location = Glacier National Park<br />Flathead County<br />Montana, U.S. | map = USA Montana#USA | map_caption = Location in Montana##Location in the United States | label_position = right | range = Lewis Range | coordinates = {{coord|48.7326991|N|113.7327429|W|type:mountain_region:US-MT_scale:100000_source:gnis|format=dms|display=inline,title}} | coordinates_ref = <ref name="gnis">{{cite gnis| id = 772281| name = Haystack Butte| accessdate = 2021-08-19}}</ref> | topo = USGS ''Logan Pass'' | first_ascent = | rock = Sedimentary rock | easiest_route = {{YDS|2}} hiking }}
'''Haystack Butte''' is a {{convert|7,486|ft|meter|adj=mid|-elevation|abbr=off|sp=us}} summit located in the Lewis Range, of Glacier National Park in the U.S. state of Montana. It is situated one mile west of the Continental Divide, in Flathead County, above the Weeping Wall on its south slope. Topographic relief is significant as the west aspect rises {{convert|3,900|ft|m|abbr=off|sp=us}} above McDonald Creek in less than 1.5 mile. It can be seen from Logan Pass, and from Going-to-the-Sun Road which traverses the west and south slopes of the peak. The nearest higher neighbor is Mount Gould, {{convert|1.07|mi|km}} to the northeast.<ref name=pb/> Climbing access is via the Highline Trail. This geographical feature's descriptive name was on maps as early as 1904, and was officially adopted March 6, 1929, by the United States Board on Geographic Names<ref name="gnis"/>
==Climate== Based on the Köppen climate classification, Haystack Butte is located in an alpine subarctic climate zone with long, cold, snowy winters, and cool to warm summers.<ref name=KGcc2007>{{Cite Köppen-Geiger cc 2007}}</ref> Temperatures can drop below −10 °F with wind chill factors below −30 °F. Precipitation runoff from the peak drains into McDonald Creek, thence Lake McDonald.
==Geology== Like other mountains in Glacier National Park, Haystack Butte Tail is composed of sedimentary rock laid down during the Precambrian to Jurassic periods. Formed in shallow seas, this sedimentary rock was initially uplifted beginning 170 million years ago when the Lewis Overthrust fault pushed an enormous slab of precambrian rocks {{convert|3|mi|km|1|abbr=on}} thick, {{convert|50|mi|km}} wide and {{convert|160|mi|km}} long over younger rock of the cretaceous period.<ref name=gadd>{{citation|title=Geology of the Rocky Mountains and Columbias|author=Gadd, Ben |year=2008}}</ref> The bulk of the peak is composed of limestone of the Siyeh Formation, with a diorite cap.<ref>[http://npshistory.com/handbooks/cooperating_associations/glac/gnha-3-1971.pdf James L. Dyson, ''The Geologic Story of Glacier National Park'']</ref>
== Gallery == <div style="max-width: 500px;"> <gallery mode=slideshow> File:Haystack Butte, sw.jpg|Southwest aspect File:Haystack Butte.jpg|South aspect centered, from Logan Pass area File:Haystack Butte and Mt. Gould.jpg|West aspect of Haystack Butte, with Mt. Gould behind File:Haystack Butte, Going-to-the-Sun Road.jpg|Haystack Butte, Going-to-the-Sun Road, and Weeping Wall seen from Highline Trail File:Haystack Butte, Highline Trail.jpg|North aspect from Highline Trail File:Haystack Butte, north aspect.jpg|North aspect File:Haystack and Cannon, Highline Trail.jpg|Haystack Butte (left) and Mt. Cannon (right), seen from Highline Trail File:Avalanche Team skier on Haystack Butte.jpg|Avalanche Team skier on Haystack Butte summit, with Garden Wall, Bishops Cap, and Pollock Mountain in the background. File:Glacier Park panorama.jpg|Left to rightː Haystack Butte, Reynolds Mountain, Mt. Oberlin, Clements Mountain, Mt. Cannon File:Haystack Butte, Haystack Creek Falls.jpg|Haystack Butte and Haystack Creek Falls seen from northwest along the Going-to-the-Sun Road. File:4-9-13 Haystack Butte.jpg|Left to rightː Haystack Butte, Reynolds Mountain, Mt. Oberlin, Clements Mountain, Mt. Cannon File:Garden Wall Weather Station.jpg|Left to rightː Haystack Butte, Reynolds Mountain, Mt. Oberlin, Clements Mountain, and Mt. Cannon seen from Garden Wall Weather Station. File:Mt. Gould and Going-to-the-Sun Road.jpg|Haystack Butte, Mt. Gould, and Bishops Cap </gallery></div>
==See also== * Geology of the Rocky Mountains * List of mountains and mountain ranges of Glacier National Park (U.S.)
==References== {{reflist}}
{{Geographic Location 2 | Center = Haystack Butte | North = Highline Trail | Northeast = Mount Gould | East = Garden Wall | ESE = Bishops Cap | Southeast = Pollock Mountain | South = Mount Oberlin | Southwest = Mount Cannon | WSW = Heavens Peak | West = Going-to-the-Sun Road | Northwest = }}
Category:Lewis Range Category:Mountains of Flathead County, Montana Category:Mountains of Glacier National Park (U.S.) Category:Mountains of Montana Category:Two-thousanders of the United States