{{Short description|Natural area in Pennsylvania}} {{Use American English|date=July 2025}} {{Use mdy dates|date=February 2025}} {{Infobox protected area | name = Miller Run Natural Area | alt_name = | iucn_category = | image = | image_alt = | image_caption = | image_size = | map = USA Pennsylvania | map_alt = | map_caption = Location within Pennsylvania | map_width = | location = [[Lycoming County, Pennsylvania|Lycoming County]], [[Pennsylvania]] | nearest_town = Haneyville | coordinates = {{coord|41.3709|N|77.4891|W|region:US-PA|format=dms|display=inline,title}} | coords_ref = | area = {{convert|4992|acre}} | established = | visitation_num = | visitation_year = | governing_body = | url = }} '''Miller Run Natural Area''' is a {{convert|4992|acre|ha|adj=on}} [[protected area]] in [[Lycoming County, Pennsylvania|Lycoming County]], [[Pennsylvania]], United States. It is part of [[Tiadaghton State Forest]], and is the second-largest designated Natural Area in Pennsylvania.<ref name=":0">{{Cite web |title=Tiadaghton State Forest Wild and Natural Areas |url=https://www.dcnr.pa.gov/StateForests/FindAForest/Tiadaghton/Pages/Wild-And-Natural-Areas.aspx |access-date=2023-12-16 |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 |pages=154–157 |year=2002 |location=Mechanicsburg, PA}}</ref>
== Details == The Natural Area protects the watersheds of four different streams that are all tributaries of [[Pine Creek (Pennsylvania)|Pine Creek]]. The longest, Miller Run, has been designated as a High-Quality Stream by the [[Pennsylvania Department of Environmental Protection]].<ref>{{Cite web |title=Miller Run Natural Area |url=https://elibrary.dcnr.pa.gov/GetDocument?docId=3879910&DocName=FD12%20Tiadaghton%20Miller%20Run%20Natural%20Area%20Factsheet%202021.pdf |access-date=11 May 2024 |publisher=[[Pennsylvania Department of Natural Resources]]}}</ref>
Plants that are uncommon in the region can be found in the Natural Area, such as the poisonous [[Actaea pachypoda|white baneberry]], and the area includes the ruins of several [[Forest railway|logging railroads]] and their affiliated camps. The Natural Area can only be accessed via relatively dilapidated hiking trails from a nearby gravel road.<ref name="Fergus" />
==References== {{reflist}}
{{Protected Areas of Pennsylvania}}
[[Category:Protected areas of Lycoming County, Pennsylvania]]