Hanging Rock (Upper Merion Township, Pennsylvania)

	Hanging Rock
	U.S. National Register of Historic Places
	Hanging Rock, 2019
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Location	1144 S. Gulph Rd., Gulph Mills, Upper Merion Township, Pennsylvania
Coordinates	40°3′55″N 75°20′31″W / 40.06528°N 75.34194°WCoordinates: 40°3′55″N 75°20′31″W / 40.06528°N 75.34194°W
Area	less than one acre
Built	1924
NRHP reference No.	97001251
Added to NRHP	December 24, 1997

Hanging Rock, also known as Overhanging Rock, or locally as Drummond's head, is a historic natural feature located in Gulph Mills, Upper Merion Township, Montgomery County, Pennsylvania. It is a large natural outcropping of phyllite that protrudes approximately eight feet over the roadway.^[2] The roadway, Pennsylvania Route 320 (S Gulph Road), was laid out as a public highway in 1711–1712. The road was traveled by General George Washington and the Continental Army into Valley Forge for the winter encampment of 1777–1778. The rock was dedicated as a memorial to that march by the Valley Forge Historical Society in 1924.^[3] In 1917 and 1954 holes were drilled into Hanging Rock for dynamite in an effort to remove the rock. This, along with erosion and vehicle collisions, has changed the shape of the rock over time. The "overhang" of the rock has decreased since the invention of the automobile as car crashes have chipped away at the rock over the years.^[2]

It was listed on the National Register of Historic Places in 1997.^[1]

Hanging Rock on what is now PA 320 in Gulph Mills

1919

2019

References[]

^ ^a ^b "National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010.
^ ^a ^b Stacy A. Swigart (August 1997). "National Register of Historic Places Inventory Nomination Form: Hanging Rock" (PDF). Retrieved 2012-05-11.
^ "National Historic Landmarks & National Register of Historic Places in Pennsylvania" (Searchable database). CRGIS: Cultural Resources Geographic Information System. Note: This includes Stacy A. Swigart (August 1997). "National Register of Historic Places Inventory Nomination Form: Hanging Rock" (PDF). Retrieved 2012-05-11.

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[nris-1] "National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010.

[:0-2] Stacy A. Swigart (August 1997). "National Register of Historic Places Inventory Nomination Form: Hanging Rock" (PDF). Retrieved 2012-05-11.

[arch-3] "National Historic Landmarks & National Register of Historic Places in Pennsylvania" (Searchable database). CRGIS: Cultural Resources Geographic Information System. Note: This includes Stacy A. Swigart (August 1997). "National Register of Historic Places Inventory Nomination Form: Hanging Rock" (PDF). Retrieved 2012-05-11.

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v t Upper Merion Township (King of Prussia area) in Montgomery County, Pennsylvania
Neighborhoods	Gulph Mills King of Prussia Swedeland Wayne (part)
Attractions	Bridge in Upper Merion Township Hanging Rock King of Prussia Mall King of Prussia Town Center King of Prussia Inn King of Prussia Volunteer Fire Company 9/11 Memorial Valley Forge Casino Resort Valley Forge National Historical Park (part) National Memorial Arch Washington's Headquarters Washington Memorial Chapel
Education	Upper Merion SD Upper Merion HS Armenian Sisters Academy
Industry	AmeriGas Universal Health Services Radial, Inc.

v t US National Register of Historic Places in Pennsylvania
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