# Snyder-Middleswarth Natural Area

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Natural area in Pennsylvania

Snyder-Middleswarth Natural Area IUCN category III (natural monument or feature) Relict virgin forest within Snyder-Middleswarth Natural Area Location of Snyder-Middleswarth Natural Area in Pennsylvania Location Snyder County, Pennsylvania Nearest town Troxelville Coordinates 40°48′36″N 77°16′59″W / 40.81000°N 77.28306°W / 40.81000; -77.28306 Area 500 acres (200 ha)[1] Elevation 1,329 ft (405 m)[2] Established 1921[3] Named for Simon Snyder and Ner Alexander Middleswarth Governing body Pennsylvania Department of Conservation and Natural Resources Website Snyder Middleswarth Natural Area U.S. National Natural Landmark Designated 1967

**Snyder-Middleswarth Natural Area** is a 500 acre (202 ha) [National Natural Landmark](/source/National_Natural_Landmark) within [Bald Eagle State Forest](/source/Bald_Eagle_State_Forest) in [Spring Township](/source/Spring_Township%2C_Snyder_County%2C_Pennsylvania), [Snyder County](/source/Snyder_County%2C_Pennsylvania), [Pennsylvania](/source/Pennsylvania) in the [United States](/source/United_States).[4] It is named for two Pennsylvania politicians from Snyder County: [Simon Snyder](/source/Simon_Snyder) and [Ner Alexander Middleswarth](/source/Ner_Alexander_Middleswarth). It was formerly a [Pennsylvania state park](/source/List_of_Pennsylvania_state_parks) and was the only one in Snyder County, but lost its state park status in the mid 1990s.[5]

## Name

Snyder-Middleswarth Natural Area is named for two Pennsylvania politicians from Snyder County: [Simon Snyder](/source/Simon_Snyder) and [Ner Alexander Middleswarth](/source/Ner_Alexander_Middleswarth).[5] Snyder County is also named for Simon Snyder.[6]

Snyder (1759 – 1819) was a three-time Speaker of the [Pennsylvania House of Representatives](/source/Pennsylvania_House_of_Representatives) and the third [governor of Pennsylvania](/source/List_of_Governors_of_Pennsylvania). He was elected to the [United States Senate](/source/United_States_Senate), but died before he could take office. As of 2007 he remains the only Pennsylvania governor from Snyder County.[7] Middleswarth (1783 – 1865) was twice Speaker of the Pennsylvania House, and served in the [Pennsylvania State Senate](/source/Pennsylvania_State_Senate) and the [United States House of Representatives](/source/United_States_House_of_Representatives).[8]

The [United States Geological Survey](/source/United_States_Geological_Survey) [Geographic Names Information System](/source/Geographic_Names_Information_System) (GNIS) lists the name as "Snyder Middleswarth Natural Area".[9] As of 2023, the hyphen is used by the Pennsylvania Department of Conservation and Natural Resources, as well as the [National Park Service](/source/National_Park_Service) in its entry for the [National Natural Landmark](/source/National_Natural_Landmark).[10]

## Location

Snyder-Middleswarth Natural Area is in Spring Township in western Snyder County, about 5 miles (8 km) west of [Troxelville](/source/Troxelville%2C_Pennsylvania) on Swift Run Road.[11] It is 23 miles (37 km) southwest of [Lewisburg](/source/Lewisburg%2C_Pennsylvania) and 31 miles (50 km) southeast of [State College](/source/State_College%2C_Pennsylvania).[12] The natural area is in the [Ridge-and-valley Appalachians](/source/Ridge-and-valley_Appalachians), in a narrow east-west valley between Jacks Mountain to the south and Buck and Penns Creek Mountains to the north.[13] Swift Run, a tributary of [Middle Creek](/source/Middle_Creek_(Penns_Creek)), flows east through the area. The Rock Springs Picnic Area is at the eastern end of the preserve, with the Snyder-Middleswarth Picnic Area west of this, in about the center of the tract, just where Swift Run Road leaves Swift Run. Tall Timbers Natural Area is the western border, while Bald Eagle State Forest lands surround Snyder-Middleswarth Natural Area in all other directions.[14]

## History

Swift Run in High Rock picnic area

In the 19th and early 20th centuries, almost all of Pennsylvania's forests were clear cut, with only a few isolated tracts of virgin forest surviving. The land that became Snyder-Middleswarth Natural Area was purchased by the state in 1902, as part of a larger 14,000 acre (56.66 km) parcel.[15] On April 12, 1921 the governor signed the law creating "Snyder-Middleswarth State Forest Park", making it Pennsylvania's ninth state park. By 1923 the park had a telephone and some structures, and in 1937 the state named it a "Forest Monument" as an "area of botanical or historic interest".[3] Early in the park's history a [fire tower](/source/Fire_tower) was built just west of it, but this was eventually abandoned and only the foundations remained by 1992.[15]

Snyder-Middleswarth was still a "State Forest Park" on the official 1965 [Pennsylvania Department of Highways](/source/Pennsylvania_Department_of_Transportation) Snyder County map.[16] In November 1967, the park was named a [National Natural Landmark](/source/National_Natural_Landmark), as an "outstanding example of a relict forest composed predominantly of hemlock, birch, and pine, with scattered oaks".[17] In 1980 an airplane carrying the *[New York Times](/source/New_York_Times)* crashed with one fatality. The crash site is on the summit of Thick Mountain, on the southern edge of the park.[15] By 1981, both the Snyder-Middleswarth and Tall Timbers Natural Areas had been established,[18] the former as part of the state park and the latter as part of Bald Eagle State Forest. While both areas are on Swift Run, Tall Timbers is old second-growth forest. Snyder-Middleswarth's virgin forest is thought to have survived at least in part due to its location and the difficulty of transporting the cut timber,[1] although the fact that many of the trees were brittle [hemlock](/source/Tsuga) may also have preserved them.[15]

Despite being Snyder County's only state park and a National Natural Landmark, Snyder-Middleswarth lost its status as a state park sometime between 1992 and 1996, becoming just a Natural Area within the state forest system.[15] Sources differ as to the size of the former Snyder-Middleswarth State Park. As of December 2007, at least ten years after the park ceased to exist, the DCNR webpage "State Parks near the Bald Eagle State Forest" still lists Snyder-Middleswarth State Park, and gives its size as 425 acres (172 ha).[5] However, Thwaites (1992) wrote that the park was only the 8 acre (3.2 ha) picnic area, but distinguished it from the "much larger Snyder Middleswarth National Natural Landmark" (without giving its exact size).[15]

According to the DCNR, as of 2007 Snyder-Middleswarth Natural Area is 500 acres (202 ha), of which 250 acres (101 ha) is virgin forest. The tallest trees at Snyder-Middleswarth are more than 150 feet (46 m) tall and measure more than 40 inches (102 cm) [diameter at breast height](/source/Diameter_at_breast_height). As measured by its [growth rings](/source/Growth_rings), one fallen tree was found to be 347 years old.[1] The adjoining Tall Timbers Natural Area is 660 acres (267 ha), and has a "second growth forest of oak, white pine, hemlock, and hard pine".[19]

Panoramic view of two branches of Swift Run from the Snyder-Middleswarth picnic area parking lot bridge. The trailhead for the Hemlocks Trail is on the left by the footbridge, and the trailhead for the Swift Run Trail is on the right. Both lead through virgin forest along Swift Run.

## References

Wikimedia Commons has media related to [Snyder Middleswarth Natural Area](https://commons.wikimedia.org/wiki/Category:Snyder_Middleswarth_Natural_Area).

1. ^ [***a***](#cite_ref-dcnr_1-0) [***b***](#cite_ref-dcnr_1-1) [***c***](#cite_ref-dcnr_1-2) ["Snyder Middleswarth Natural Area, Tall Timbers Natural Area"](https://web.archive.org/web/20040302164219/http://www.dcnr.state.pa.us/forestry/oldgrowth/snydermiddleswarth.aspx). [Pennsylvania Department of Conservation and Natural Resources](/source/Pennsylvania_Department_of_Conservation_and_Natural_Resources). Archived from [the original](http://www.dcnr.state.pa.us/forestry/oldgrowth/snydermiddleswarth.aspx) on March 2, 2004. Retrieved December 11, 2007.

1. **[^](#cite_ref-usgs_2-0)** ["Snyder Middleswarth Natural Area"](https://edits.nationalmap.gov/apps/gaz-domestic/public/search/names/1212570). *[Geographic Names Information System](/source/Geographic_Names_Information_System)*. [United States Geological Survey](/source/United_States_Geological_Survey). October 1, 1989. Retrieved December 11, 2007.

1. ^ [***a***](#cite_ref-cupper_3-0) [***b***](#cite_ref-cupper_3-1) Cupper, Dan (1993). *Our Priceless Heritage: Pennsylvania's State Parks 1893-1993*. [Harrisburg, Pennsylvania](/source/Harrisburg%2C_Pennsylvania): [Commonwealth of Pennsylvania](/source/Pennsylvania), [Pennsylvania Historical and Museum Commission](/source/Pennsylvania_Historical_and_Museum_Commission) for [Department of Natural Resources](/source/Pennsylvania_Department_of_Conservation_and_Natural_Resources), Bureau of State Parks. [ISBN](/source/ISBN_(identifier)) [0-89271-056-X](https://en.wikipedia.org/wiki/Special:BookSources/0-89271-056-X).

1. **[^](#cite_ref-4)** ["Bald Eagle State Forest Wild and Natural Areas"](https://www.dcnr.pa.gov/StateForests/FindAForest/BaldEagle/Pages/Wild_NaturalAreas.aspx). *Pennsylvania Department of Conservation & Natural Resources*. Retrieved December 19, 2023.

1. ^ [***a***](#cite_ref-state_park_5-0) [***b***](#cite_ref-state_park_5-1) [***c***](#cite_ref-state_park_5-2) ["State Parks near the Bald Eagle State Forest: Snyder Middleswarth State Park"](https://web.archive.org/web/20040302162425/http://www.dcnr.state.pa.us/forestry/stateforests/baldeagleparks.aspx). [Pennsylvania Department of Conservation and Natural Resources](/source/Pennsylvania_Department_of_Conservation_and_Natural_Resources). Archived from [the original](http://www.dcnr.state.pa.us/Forestry/stateforests/baldeagleparks.aspx) on March 2, 2004. Retrieved December 11, 2007.

1. **[^](#cite_ref-6)** ["The Pennsylvania Manual: Pennsylvania Local Government"](http://www.portal.state.pa.us/portal/server.pt/gateway/PTARGS_0_71264_0_0_18/) (PDF). The Commonwealth of Pennsylvania. pp. 6–40. Retrieved December 19, 2007.

1. **[^](#cite_ref-7)** ["Pennsylvania Governors Past to Present: Governor Simon Snyder"](https://web.archive.org/web/20071017023551/http://www.phmc.state.pa.us/bah/dam/governors/snyder.asp?secid=31). [Pennsylvania Historical and Museum Commission](/source/Pennsylvania_Historical_and_Museum_Commission). Archived from [the original](http://www.phmc.state.pa.us/bah/dam/governors/snyder.asp?secid=31) on October 17, 2007. Retrieved December 12, 2007.

1. **[^](#cite_ref-8)** ["MIDDLESWARTH, Ner, (1783 - 1865)"](http://bioguide.congress.gov/scripts/biodisplay.pl?index=M000695). [Biographical Directory of the United States Congress](/source/Biographical_Directory_of_the_United_States_Congress). Retrieved December 12, 2007.

1. **[^](#cite_ref-usgs_2_9-0)** ["Snyder-Middleswarth State Park"](https://edits.nationalmap.gov/apps/gaz-domestic/public/search/names/1187962). *[Geographic Names Information System](/source/Geographic_Names_Information_System)*. [United States Geological Survey](/source/United_States_Geological_Survey). August 2, 1979. Retrieved December 12, 2007.

1. **[^](#cite_ref-10)** National Park Service. ["Snyder-Middleswarth Natural Area"](https://www.nps.gov/subjects/nnlandmarks/site.htm?Site=SNMI-PA). *National Natural Landmarks*. Retrieved December 19, 2023.

1. **[^](#cite_ref-penndot_11-0)** Pennsylvania Department of Transportation, Bureau of Planning and Research, Geographic Information Division. ["2007 General Highway Map Snyder County and Union County Pennsylvania"](ftp://ftp.dot.state.pa.us/public/pdf/BPR_pdf_files/Maps/GHS/Roadnames/union_snyder_GHSN.PDF) (PDF). *FTP server* ([FTP](/source/FTP)). Retrieved December 11, 2007.{{[cite web](https://en.wikipedia.org/wiki/Template:Cite_web)}}: CS1 maint: multiple names: authors list ([link](https://en.wikipedia.org/wiki/Category:CS1_maint:_multiple_names:_authors_list))[*dead ftp link*] (To view documents see [Help:FTP](https://en.wikipedia.org/wiki/Help:FTP))

1. **[^](#cite_ref-distance_12-0)** Michels, Chris (1997). ["Latitude/Longitude Distance Calculation"](https://web.archive.org/web/20080411174434/http://www.nau.edu/~cvm/latlongdist.html). Archived from [the original](http://www2.nau.edu/~cvm/latlongdist.html) on April 11, 2008. Retrieved December 13, 2007.

1. **[^](#cite_ref-13)** United States Geological Survey. ["Weikert Pennsylvania Topographic Map"](http://www.topoquest.com/map.asp?lat=40.80591&lon=-77.29582&s=200&size=l&symshow=n&u=4&datum=nad83&layer=DRG). TopoQuest.com. Retrieved June 29, 2008.

1. **[^](#cite_ref-bald_eagle_map_14-0)** ["Bald Eagle State Forest"](https://web.archive.org/web/20061116013240/http://www.dcnr.state.pa.us/forestry/stateforests/maps/fd07_map.pdf) (PDF). [Pennsylvania Department of Conservation and Natural Resources](/source/Pennsylvania_Department_of_Conservation_and_Natural_Resources). Archived from [the original](http://www.dcnr.state.pa.us/forestry/stateforests/maps/fd07_map.pdf) (PDF) on November 16, 2006. Retrieved December 13, 2007.

1. ^ [***a***](#cite_ref-hikes_15-0) [***b***](#cite_ref-hikes_15-1) [***c***](#cite_ref-hikes_15-2) [***d***](#cite_ref-hikes_15-3) [***e***](#cite_ref-hikes_15-4) [***f***](#cite_ref-hikes_15-5) Thwaites, Tom (1992). [*Fifty Hikes in Central Pennsylvania*](https://archive.org/details/fiftyhikesincent0000thwa/page/69) (Fourth updated printing ed.). [Woodstock, Vermont](/source/Woodstock%2C_Vermont): Backcountry Publications. pp. [69–71](https://archive.org/details/fiftyhikesincent0000thwa/page/69). [ISBN](/source/ISBN_(identifier)) [0-942440-24-2](https://en.wikipedia.org/wiki/Special:BookSources/0-942440-24-2).

1. **[^](#cite_ref-1965dot_16-0)** Pennsylvania Department of Highways (1965). ["General Highway Map Snyder County Pennsylvania"](ftp://ftp.dot.state.pa.us/public/pdf/BPR_PDF_FILES/Maps/Type_10_GHS_Historical_Scans/Snyder_1965.pdf) (PDF). *FTP server* ([FTP](/source/FTP)). Retrieved December 13, 2007.[*dead ftp link*] (To view documents see [Help:FTP](https://en.wikipedia.org/wiki/Help:FTP))

1. **[^](#cite_ref-nnl_17-0)** ["National Natural Landmark: Snyder Middleswarth Natural Area"](https://web.archive.org/web/20061007060114/http://www.nature.nps.gov/nnl/Registry/USA_Map/States/Pennsylvania/nnl/sm/index.cfm). [National Park Service](/source/National_Park_Service). Archived from [the original](http://www.nature.nps.gov/nnl/Registry/USA_Map/States/Pennsylvania/nnl/sm/index.cfm) on October 7, 2006. Retrieved December 13, 2007.

1. **[^](#cite_ref-1981dot_18-0)** Pennsylvania Department of Transportation (1981). ["General Highway Map Snyder County and Union County Pennsylvania"](ftp://ftp.dot.state.pa.us/public/pdf/BPR_PDF_FILES/Maps/Type_10_GHS_Historical_Scans/Snyder_1981.pdf) (PDF). *FTP server* ([FTP](/source/FTP)). Retrieved December 13, 2007.[*dead ftp link*] (To view documents see [Help:FTP](https://en.wikipedia.org/wiki/Help:FTP)) *Note*: This map does not show the state park, but also omits [Sand Bridge State Park](/source/Sand_Bridge_State_Park) in [Union County](/source/Union_County%2C_Pennsylvania).

1. **[^](#cite_ref-areas_19-0)** ["Natural and Wild Areas of the Bald Eagle State Forest"](https://web.archive.org/web/20040225210537/http://www.dcnr.state.pa.us/forestry/stateforests/baldeaglewild.aspx). [Pennsylvania Department of Conservation and Natural Resources](/source/Pennsylvania_Department_of_Conservation_and_Natural_Resources). Archived from [the original](http://www.dcnr.state.pa.us/Forestry/stateforests/baldeaglewild.aspx) on February 25, 2004. Retrieved December 14, 2007.

v t e Protected areas of Pennsylvania Federal National Battlefields and Military Parks Fort Necessity Gettysburg National Fish Hatcheries Allegheny National Forests Allegheny National Historic Sites and Historical Parks Allegheny Portage Railroad Edgar Allan Poe Eisenhower First State Friendship Hill Grey Towers Gloria Dei (Old Swedes') Church Hopewell Furnace Independence Steamtown Valley Forge National Memorials Benjamin Franklin Flight 93 Johnstown Flood Thaddeus Kosciuszko National Monuments Carlisle Federal Indian Boarding School National Recreation Areas Allegheny Delaware Water Gap National Trails Appalachian Lewis and Clark North Country Potomac Heritage National Wild and Scenic Rivers Allegheny River Clarion River Lower Delaware Middle Delaware Upper Delaware National Wildlife Refuge Cherry Valley Erie John Heinz Ohio River Islands Other National Historic Landmarks (Philadelphia) National Natural Landmarks National Register of Historic Places Wilderness Areas State Natural Areas Alan Seeger Algerine Swamp Anders Run Bark Cabin Bear Meadows Bear Run Beartown Woods Big Flat Laurel Black Ash Swamp Bruce Lake Buckhorn Carbaugh Run Charles F. Lewis Cranberry Swamp David R. Johnson Detweiler Run Devil's Elbow East Branch Swamp Forrest H. Dutlinger Frank E. Masland Jr. Halfway Run Hemlocks The Hook Hoverter and Sholl Box Huckleberry Jakey Hollow Johnson Run Joyce Kilmer Kettle Creek Gorge Lebo Red Pine Little Juniata Little Mud Pond Swamp Little Tinicum Island Lower Jerry Run Marion Brooks M.K. Goddard/Wykoff Run Meeting of the Pines Miller Run Mt. Cydonia Ponds Mt. Davis Mt. Logan Pennel Run Pine Creek Gorge Pine Lake Pine Ridge Pine Tree Trail Reynolds Spring Roaring Run Rocky Ridge Rosecrans Bog Ruth Zimmerman Sheets Island Archipelago Snyder-Middleswarth Spruce Swamp Stillwater Sweet Root Tall Timbers Tamarack Run Tamarack Swamp Torbert Island State Parks Allegheny Islands Archbald Pothole Bald Eagle Beltzville Bendigo Benjamin Rush Big Elk Creek Big Pocono Big Spring Black Moshannon Blue Knob Boyd Big Tree Buchanan's Birthplace Bucktail Caledonia Canoe Creek Chapman Cherry Springs Clear Creek Codorus Colonel Denning Colton Point Cook Forest Cowans Gap Delaware Canal Denton Hill Elk Erie Bluffs Evansburg Fort Washington Fowlers Hollow Frances Slocum French Creek Gifford Pinchot Gouldsboro Greenwood Furnace Hickory Run Hillman Hills Creek Hyner Run Hyner View Jacobsburg Jennings Joseph E. Ibberson Kettle Creek Keystone Kings Gap Kinzua Bridge Kooser Lackawanna Laurel Hill Laurel Mountain Laurel Ridge Laurel Summit Lehigh Gorge Leonard Harrison Linn Run Little Buffalo Little Pine Locust Lake Lyman Run Marsh Creek Maurice K. Goddard McCalls Dam McConnells Mill Memorial Lake Milton Mont Alto Moraine Mt. Pisgah Nescopeck Neshaminy Nockamixon Nolde Forest Norristown Farm Ohiopyle Oil Creek Ole Bull Parker Dam Patterson Penn-Roosevelt Pine Grove Furnace Poe Paddy Poe Valley Point Presque Isle Prince Gallitzin Promised Land Prompton Prouty Place Pymatuning R. B. Winter Raccoon Creek Ralph Stover Ravensburg Reeds Gap Ricketts Glen Ridley Creek Ryerson Station Salt Springs Samuel S. Lewis Sand Bridge Shawnee Shikellamy Simon B. Elliott Sinnemahoning Sizerville Susquehanna Susquehanna Riverlands Susquehannock Swatara Tobyhanna Trough Creek Tuscarora Tyler Upper Pine Bottom Varden Vosburg Neck Warriors Path Washington Crossing Whipple Dam White Clay Creek Worlds End Yellow Creek State Forests Bald Eagle Buchanan Clear Creek Cornplanter Delaware Elk Forbes Gallitzin Loyalsock Michaux Moshannon Pinchot Rothrock Sproul Susquehannock Tiadaghton Tioga Tuscarora Weiser William Penn Scenic Rivers Bear Run French Creek Lehigh River LeTort Spring Run Lick Run Lower Brandywine Octoraro Creek Pine Creek Schuylkill River Stony Creek Tucquan Creek Tulpehocken Creek Yellow Breeches Creek State Game Lands 12 13 14 24 25 26 28 29 30 31 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 179 179 180 181 182 183 184 185 186 187 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 335 Wild areas Algerine Asaph Burns Run Clear Shade Hammersley James C. Nelson Kettle Creek Russell P. Letterman Martin Hill McIntyre Penns Creek Quebec Run Quehanna Russell P. Letterman Square Timber Stairway Thickhead Mountain Trough Creek Wolf Run Other Laurel Highlands Hiking Trail Mohn Mill Ponds Wild Plant Sanctuary Stone Valley Recreation Area Local and private Abernathy Field Station Asbury Woods Beechwood Farms Nature Reserve Benjamin Olewine III Nature Center Boyce Park Nature Center Briar Bush Nature Center Carbon County Environmental Education Center Churchville Nature Center Endless Mountains Nature Center Fern Hollow Nature Center Frick Environmental Center Great Valley Nature Center Harrison Hills Park Environmental Education Center Hawk Mountain Sanctuary Honey Hollow Environmental Education Center Jarrett Nature Center John James Audubon Center at Mill Grove Lacawac Lancaster Environmental Center Latodami Nature Center at North Park McKaig Nature Education Center McKeever Environmental Learning Center Millbrook Marsh Nature Center Kettle Creek Environmental Education Center Myrick Conservation Center Ned Smith Center for Nature and Art Nurture Nature Center Peace Valley Nature Center Pocono Environmental Education Center Pool Wildlife Sanctuary Powdermill Nature Reserve Richard Nixon Park Nature Center Riverbend Environmental Education Center Shaver's Creek Environmental Center Silver Lake Nature Center South Park Nature Center Strawberry Hill Nature Center Tom Ridge Environmental Center Trexler Environmental Center Trexler Nature Preserve Tyler Arboretum Welkinweir Whites' Woods Nature Center Winnie Palmer Nature Reserve at Saint Vincent College Woodbourne Forest and Wildlife Preserve Woodcock Creek Nature Center Category Pennsylvania Department of Conservation and Natural Resources Philadelphia Pittsburgh Commons

v t e National Natural Landmarks in Pennsylvania Bear Meadows Natural Area Box Huckleberry Site Cook Forest State Park Ferncliff Peninsula Natural Area Ferncliff Wildflower and Wildlife Preserve Florence Jones Reineman Wildlife Sanctuary Pine Creek Gorge Hawk Mountain Sanctuary Hearts Content Scenic Area Hemlocks Natural Area Hickory Run Boulder Field Lake Lacawac McConnells Mill State Park Monroe Border Fault Nay Aug Park Gorge and Waterfall Nottingham Park Serpentine Barrens Presque Isle State Park Reynolds Spring and Algerine Swamp Bogs The Glens Natural Area Snyder-Middleswarth Natural Area Susquehanna Water Gaps Tamarack Swamp Tannersville Cranberry Bog John Heinz National Wildlife Refuge at Tinicum Tionesta Scenic and Research Natural Areas Titus and Wattsburg Bogs Wissahickon Valley List of National Natural Landmarks in Pennsylvania

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Adapted from the Wikipedia article [Snyder-Middleswarth Natural Area](https://en.wikipedia.org/wiki/Snyder-Middleswarth_Natural_Area) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Snyder-Middleswarth_Natural_Area?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.