{{Short description|Natural area in Pennsylvania}} {{Use mdy dates|date=May 2026}} {{Infobox protected area | name = Detweiler Run Natural Area | alt_name = | iucn_category = | image = MST Detweiler2.jpg | image_alt = | image_caption = The [[Mid State Trail (Pennsylvania)|Mid State Trail]] in Detweiler Run Wild Area | image_size = | map = USA Pennsylvania | map_alt = | map_caption = Location within Pennsylvania | map_width = | location = [[Huntingdon County, Pennsylvania|Huntingdon County]], [[Pennsylvania]] | nearest_town = [[Boalsburg, Pennsylvania|Boalsburg]] | coordinates = {{coord|40.7219|N|77.7372|W|region:US-PA|format=dms|display=inline,title}} | coords_ref = | area = {{convert|463|acre}} | established = | visitation_num = | visitation_year = | governing_body = | url = }}
'''Detweiler Run Natural Area''' is a {{convert|463|acre|ha|adj=on}} [[protected area]] in [[Huntingdon County, Pennsylvania|Huntingdon County]], [[Pennsylvania]], United States. It is part of [[Rothrock State Forest]].<ref name=":8">{{Cite web |title=Rothrock State Forest Wild and Natural Areas |url=https://www.pa.gov/agencies/dcnr/recreation/where-to-go/state-forests/find-a-forest/rothrock/wild-natural-areas |access-date=2026-05-16 |website=Pennsylvania Department of Conservation & Natural Resources |language=en-US}}</ref><ref name="Fergus">{{Cite book |last=Fergus |first=Charles |title=Natural Pennsylvania: Exploring the State Forest Natural Areas |publisher=Stackpole Books |year=2002 |location=Mechanicsburg, PA |pages=76–79}}</ref> It is surrounded by [[Thickhead Mountain Wild Area]].<ref name=":8" />
== Description == The Natural Area was established to protect a grove of [[Old-growth forest|old-growth]] [[Tsuga canadensis|hemlock]] and [[Pinus strobus|white pine]] trees.<ref name=":8" /> These trees survived the [[History of logging in Pennsylvania|Pennsylvania logging era]], likely because they were near an undefined boundary between two competing logging firms.<ref>{{Cite web |date=1997-07-22 |title=Tall Timbers: Old-Growth Forests Survive PA's Heavily Logged Past |url=https://www.mcall.com/1997/07/22/tall-timbers-old-growth-forests-survive-pas-heavily-logged-past/ |access-date=2026-05-16 |website=The Morning Call |language=en-US}}</ref> The area is managed by Pennsylvania as an [[Important Bird Area]] and it is also known for hosting many species of butterflies.<ref name="Fergus" /> It is traversed by the [[Mid State Trail (Pennsylvania)|Mid State Trail]]<ref>{{Cite web |title=Mid State Trail Association |url=http://www.hike-mst.org/index.php/the-trail/state-college-region |access-date=2022-10-11 |website=Mid State Trail Association: State College Region}}</ref> and the northernmost segment of the [[Standing Stone Trail]].<ref name="Mitchell">{{cite book |last1=Mitchell |first1=Jeff |title=Backpacking Pennsylvania: 37 Great Hikes |date=2005 |publisher=Stackpole Books |isbn=0811731804 |location=Mechanicsburg, Pennsylvania |page=88}}</ref>
== References == {{reflist}}
{{Protected Areas of Pennsylvania}}
[[Category:Protected areas of Huntingdon County, Pennsylvania]]