Open Parks Network

North portal of Young Pisgah Ridge, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2T.

North and South portals of Buck Springs Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2T.

West portal of Grassy Knob Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2S.

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North portal of Pine Mountain Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2S.

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North portal of Grassy Knob Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2S.

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Young Pisgah Ridge tunnel portals, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2T.

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South portal of Pine Mountain Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2S.

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South portal of Ferrin Knob Tunnel #3, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2S.

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North portal of Ferrin Knob Tunnel #2, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2S.

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North portal of Ferrin Knob Tunnel #3, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2S.

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North and South portals of Fork Mountain Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2T.

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North portal of Ferrin Knob Tunnel #1, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2S.

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North and South portals of Little Pisgah Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2T.

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South portal of Ferrin Knob Tunnel #1, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2S.

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South portal of Ferrin Knob Tunnel #2, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2S.

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Final drawing of portals of Ferrin Knob tunnel #1, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2S.

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North and south portals of Ferrin Knob tunnel #1, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2S.

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North and south portals of Ferrin Knob tunnel #3, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2S.

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North and south portals of Ferrin Knob tunnel #2, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2S.

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Topography and alignment, north and south portals of Ferrin Knob tunnel #2, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2S.

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Topography and alignment, north and south portals of Ferrin Knob tunnel #3, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2S.

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North and South portals of Little Pisgah Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North & South Portals - Little Pisgah Tunnel, North Carolina Section 2T.

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1964-01-07

Final drawing of portals of Ferrin Knob tunnel #2, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North & South Tunnel Portals, Ferrin Knob #2 (401.3), North Carolina Section 2S.

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1963-12-06

Final drawing of portals of Ferrin Knob tunnel #3, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North & South Tunnel Portals, Ferrin Knob #3 (401.5), North Carolina Section 2S.

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1963-12-06

Man-made tunnel Jean Lafitte National Historical Park and Preserve

1980

Photograph of people in old tunnel Jean Lafitte National Historical Park and Preserve

Circa 1986

Mary's Rock Tunnel, Shenandoah National Park, Virginia Kings Mountain National Military Park Mary's Rock Tunnel

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Mary's Rock Tunnel, Shenandoah National Park, Virginia Kings Mountain National Military Park mars Rock Tunnel, South portal

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Ring stone detail Blue Ridge Parkway Virginia, Section 1G.

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1956-06-04

Tunnel topographic study Blue Ridge Parkway Virginia, Section 1G.

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1956-06-01

South portal of tunnel at station 778, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2P.

Tunnel portal plan and elevation Blue Ridge Parkway Virginia, Section 1G.

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1956-06-01

Structural Inspection and O National Park Service Water Resources Division; National Park Service

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1993-08

Tunnel portal dimensioned masonry, Blue Ridge Parkway, North Carolina Blue Ridge Parkway Tunnel Portal Dimensioned Masonry - 2P5, North Carolina Section 2P.

1950-05-15

Old stone tunnel under leaves South Carolina State Parks Written on slide: 14

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Yellowstone photo album 7, page 73 Yellowstone National Park

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Circa 1925
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Tunnel portal plan and elevation Blue Ridge Parkway Tunnel Portal #2, Sta 162+38.5, Virginia, Section 1G.

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1956-02-01

Tunnel portal ring stone detail Blue Ridge Parkway Tunnel Portal #2, Sta 162+38.5, Virginia, Section 1G.

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1956-02-02

Feature brick wall or tunnel underground South Carolina State Parks Written on slide: 1

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Craggy flats tunnel north portal, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2P.

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Portals for Craggy Pinnacle tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2P.

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Craggy flats tunnel south portal, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2P.

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Loop Tunnel construction, circa 1935 Great Smoky Mountains National Park Loop Tunnel; Construction; II-S-16190, Physical Facilities - Roads - Structures on roads (tunnels, trail underpass, box culverts, trestles).

Circa 1935

Wildacres tunnel north portal, Section 2M, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2M.

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Wildacres tunnel north portal, Section 2M, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2M.

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Craggy flats tunnel north portal, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2P.

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Wildacres tunnel south portal, Section 2M, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2M.

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Wildacres tunnel north portal, Section 2M, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2M.

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Wildacres tunnel north portal, Section 2M, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2M.

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Wildacres tunnel south portal, Section 2M, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2M.

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Tunnels portals of Frying Pan Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2U.

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South portal of Buck Springs Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2T.

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Masonry dimensions of Wildacres tunnel, Section 2M, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2M.

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South portal of Fork Mountain Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2T.

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North portal of Fork Mountain Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2T.

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View of forest and man with paper from inside tunnel South Carolina State Parks Written on slide: 7

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View of forest and man with paper from inside tunnel South Carolina State Parks Written on slide: 8

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Tunnel portals of Frying Pan Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2U.

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Masonry dimensions of Wildacres tunnel, Section 2M, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2M.

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Young Pisgah Ridge tunnel portals, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2T.

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South portal of Little Pisgah Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2T.

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Rough ridge tunnel north portal, Section 2M, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2M.

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South twin tunnel north portal, Section 2M, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2M.

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North portal of Buck Springs Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2T.

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South twin tunnel north portal, Section 2M, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2M.

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Yellowstone photo album 7, page 69 Yellowstone National Park

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Circa 1925
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Dark image of feature brick wall or tunnel underground South Carolina State Parks Written on slide: 2

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Rough Ridge Tunnel north portal, Section 2M, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2M.

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Rough Ridge Tunnel north portal, Section 2M, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2M.

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Tunnel portals of Frying Pan Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2U.

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Rough Ridge Tunnel south portal, Section 2M, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2M.

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Topography and alignment of Forky Mountain Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2T.

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Topography and alignment of Little Pisgah Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2T.

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Rough Ridge tunnel north portal, Section 2M, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2M.

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Rough Ridge Tunnel north portal, Section 2M, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2M.

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North and south portals, Pine Mountain Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2S.

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Rough ridge tunnel north portal, Section 2M, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2M.

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North and south portals, Pine Mountain Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2S.

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Rough ridge tunnel south portal, Section 2M, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2M.

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Rough ridge tunnel south portal, Section 2M, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2M.

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Yellowstone photo album 8, page 145 Yellowstone National Park

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Circa 1933
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South portal of Young Pisgah Ridge Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2T.

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Masonry dimensions of Rough ridge tunnel, Section 2M, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2M.

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North and west tunnel portals, Grassy Knob, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2S.

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Masonry dimensions of rough ridge tunnel, Section 2M, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2M.

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North tunnel portal for Little Switzerland tunnel, Section 2L, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2L.

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Tunnel construction, Newfound Gap Road, circa 1934 Great Smoky Mountains National Park Tunnel construction; Newfound Gap Road; II-S-16202, Physical Facilities - Roads - Structures on roads (tunnels, trail underpass, box culverts, trestles).

Circa 1934

Yellowstone photo album 31, page 214 Yellowstone National Park

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Circa 1936
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Topography and alignment of Young Pisgah Ridge Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2T.

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Tanbark ridge tunnel portal, Blue Ridge Parkway, North Carolina Blue Ridge Parkway Tunnel Portal - Tanbark Ridge Tunnel, North Carolina Section 2P.

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1960-08-25

Fenced off escape tunnels, Andersonville National Historic Site, Georgia Andersonville National Historic Site Andersonville photographic Recording; 4x7, Other

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1982-12

Revised plan view of Rough ridge tunnel north portal, Section 2M, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2M.

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Profile of Radio relay site at Frying Pan Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2U.

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Loop Tunnel, Newfound Gap Highway Great Smoky Mountains National Park Loop Tunnel; Newfound Gap Highway, II-S-11525, Physical Facilities - Roads - Structures on roads (tunnels, trail underpass, box culverts, trestles)

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Profile of Radio relay site at Frying Pan Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2U.

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Tanbark ridge tunnel north portal, Blue Ridge Parkway, North Carolina Blue Ridge Parkway Tanbark Ridge Tunnel - North Portal, North Carolina Section 2P.

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1961-09-05

Profile of Radio relay site at Frying Pan Tunnel, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Carolina Section 2U.

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Craggy flats tunnel north portal, Blue Ridge Parkway, North Carolina Blue Ridge Parkway North Portal for Craggy Flats Tunnel, North Carolina Section 2P.