Poston Butte
{{Short description|Landform in Pinal County, Arizona}}
{{Use mdy dates|date=January 2025}}
{{Infobox mountain
| name = Poston Butte
| photo = PostonButte.jpg
| photo_alt =
| photo_caption = Poston Butte, with Poston's pyramidal tomb at the peak
| elevation_ft = 1749
| elevation_ref = {{navd88}}{{cite ngs |pid=DU0546 |name=Poston |accessdate=2014-02-08}}
| prominence_ft = 223
| prominence_ref = {{cite loj |id=80090 |name=Poston Butte AZ |accessdate=2016-08-19}}
| range =
| listing =
| location = Pinal County, Arizona, U.S.
| map = Arizona#USA
| map_caption = none
| map_size = 180
| label =
| label_position = bottom
| coordinates = {{coord|33.055199031|N|111.40892075|W|type:mountain_region:US-AZ_scale:100000_source:NGS|format=dms|display=inline,title}}
| range_coordinates =
| topo = USGS Florence
| last_eruption =
| first_ascent =
| easiest_route =
}}
Poston Butte, formerly called Primrose Hill, is a hill located along Hunt Highway in Florence, Pinal County, Arizona, United States,{{cite gnis |id=9682 |name=Poston Butte |access-date=2014-02-08}} near the eastern end of the Santan Mountains.{{cite web |url=http://repository.azgs.az.gov/category/place-keywords/poston-butte |title=Poston Butte |publisher=AZGS Document Repository |access-date=2014-02-08}} Geologically, it is characterized by basalts overlying altered granite.{{cite web |url=http://archives.arizonageologicalsoc.org/guidebooks/AGS_1973-11_Poston_Mineral_S.pdf |title=Poston, Butte-Mineral, Eutte-Sacaton: Fall Field Trip |publisher=Arizona Geological Society |date=November 11, 1973 |access-date=2014-02-08}}
This hill is noted for having the pyramidal tomb of Charles Debrille Poston at its summit. Poston lobbied President Lincoln and Congress to create the Territory of Arizona{{cite web |url=http://www.gutenberg.org/catalog/world/readfile?fk_files=1479850&pageno=31 |title=Building a State in Apache Land |last=Poston |first=Charles D. |page=31 |access-date=2014-02-08}} and was appointed Superintendent of Indian Affairs because of his familiarity with the Native populations of the area.{{cite web |url=http://www.gutenberg.org/catalog/world/readfile?fk_files=1479850&pageno=31 |title=Building a State in Apache Land |last=Poston |first=Charles D. |page=32 |access-date=2014-02-08}} The tomb can be accessed by a {{convert|0.6|mi|adj=on}} trail starting from the trailhead near Hunt Highway.{{cite web |url=http://hikearizona.com/decoder.php?ZTN=1977 |title=Poston's Butte – Florence, AZ |publisher=HikeArizona.com |access-date=2014-02-08}}
File:PostonButte17.jpg|Tomb of Charles D. Poston
File:PostonButte-inscription.jpg|Inscription on Poston's tomb