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716
Construction of Mammoth Cave Trail Mammoth Cave National Park; National Park Service
View on map 
Circa 1935
Entrance of moonshine cave Mammoth Cave National Park; National Park Service
View on map 
Circa 1935
Before trail construction, New Discovery, 1941 Mammoth Cave National Park; National Park Service
View on map 
Circa 1941
Entrance of Proctor Cave Mammoth Cave National Park; National Park Service
View on map 
Circa 1935
Mammoth Cave, Crystal Lake Mammoth Cave National Park; National Park Service
View on map 
Cave, New Discovery, needle gypsum Mammoth Cave National Park; National Park Service
View on map 
Column in unidentified area of cave Mammoth Cave National Park; National Park Service
View on map 
1940-07
Cave, trail construction, New Discovery, 1942 Mammoth Cave National Park; National Park Service
View on map 
1942-03
The path to Mammoth Cave entrance Mammoth Cave National Park; National Park Service
View on map 
1938
Cave, rock with gypsum deposits Mammoth Cave National Park; National Park Service
View on map 
Circa 1935
Caves, New Discovery, gypsum ribbon Mammoth Cave National Park; National Park Service
View on map 
Cave, Mammoth Dome from above, 1941 Mammoth Cave National Park; National Park Service
View on map 
1941-08
Before trail construction, New Discovery, 1941 Mammoth Cave National Park; National Park Service
View on map 
Circa 1941
Man in cave examining rock formation Mammoth Cave National Park; National Park Service
View on map 
Frozen Niagara section of Mammoth Cave Mammoth Cave National Park; National Park Service
View on map 
1939-06
Before trail construction, New Discovery, 1941 Mammoth Cave National Park; National Park Service
View on map 
Circa 1941
Close, blurry view of cave formations Mammoth Cave National Park; National Park Service
View on map 
Circa 1930
Entrance of moonshine cave Mammoth Cave National Park; National Park Service
View on map 
Circa 1935
Cave, Hindu Temple, showing cave formations Mammoth Cave National Park; National Park Service
View on map 
Circa 1942
Unidentifiable view and location (inside of cave?) Mammoth Cave National Park; National Park Service
View on map 
Caves, wooden bridge over Echo River Mammoth Cave National Park; National Park Service
View on map 
Circa 1939
Frozen Niagara section of Mammoth Cave Mammoth Cave National Park; National Park Service
View on map 
1939-06
Improved cave lighting, Frozen Niagara, 1942 Mammoth Cave National Park; National Park Service
View on map 
Circa 1941
Various angles of Frozen Niagara Mammoth Cave National Park; National Park Service
View on map 
Circa 1934
Close view of helictites, Crystal Cave Mammoth Cave National Park; National Park Service
View on map 
Circa 1930
Portrait of couple taken in cave Mammoth Cave National Park; National Park Service
View on map 
Circa 1930
Water Resources Management Plan National Park Service Water Resources Division; National Park Service
View on map 
2006-04
Environmental assessment natural resources management plan; Lehman Caves National Park Service Water Resources Division; National Park Service
View on map 
1980-02
Soldiers entering cave at historic entrance, 1941 Mammoth Cave National Park; National Park Service
View on map 
1941-05
Trail construction in cave Mammoth Cave National Park; National Park Service
View on map 
Circa 1934
Frozen Niagara section of Mammoth Cave Mammoth Cave National Park; National Park Service
View on map 
1939-06
Park rangers examining cave opening Mammoth Cave National Park; National Park Service
View on map 
Circa 1935
Entrance of Proctor Cave Mammoth Cave National Park; National Park Service
View on map 
Circa 1935
Cave, group descending Historic Entrance stairs Mammoth Cave National Park; National Park Service
View on map 
1940-09
Gateway completed at Proctor Cave Mammoth Cave National Park; National Park Service
View on map 
Circa 1935
Ruins of Karnak Mammoth Dome, 1937 Mammoth Cave National Park; National Park Service
View on map 
1937-01-21
Cave, before trail construction, New Discovery, 1942 Mammoth Cave National Park; National Park Service
View on map 
1942-03
New Discovery, excavation work Mammoth Cave National Park; National Park Service
View on map 
Various angles of Frozen Niagara Mammoth Cave National Park; National Park Service
View on map 
Circa 1934
Cave, before trail construction, New Discovery, 1942 Mammoth Cave National Park; National Park Service
View on map 
1942-03
Party in Washington dining room, 1935 Mammoth Cave National Park; National Park Service
View on map 
1935-05-03
Yellowstone photo album 23, page 191 Yellowstone National Park
View on map 
Circa 1929
View series 
Cave, visitors enter the Historic Entrance, 1946 Mammoth Cave National Park; National Park Service
View on map 
1946-08
Cave, before trail construction, New Discovery, 1942 Mammoth Cave National Park; National Park Service
View on map 
1942-03
Gypsum deposits, unknown location in cave Mammoth Cave National Park; National Park Service
View on map 
Circa 1935
Cave, New Discovery, Mound City and terraces Mammoth Cave National Park; National Park Service
View on map 
Caves, wooden bridge over Echo River Mammoth Cave National Park; National Park Service
View on map 
Circa 1939
Gypsum deposits, unknown location in cave Mammoth Cave National Park; National Park Service
View on map 
Circa 1935
Close view of helictites, Crystal Cave Mammoth Cave National Park; National Park Service
View on map 
Circa 1930
Chinese Wall section of cave formation Mammoth Cave National Park; National Park Service
View on map 
Circa 1942
Cave, shaft to New Discovery Mammoth Cave National Park; National Park Service
View on map 
1940-09
WLW radio in the cave Mammoth Cave National Park; National Park Service
View on map 
1940-07
Cave, Drapery Room stairs and trail Mammoth Cave National Park; National Park Service
View on map 
Circa 1942
Cave, New Discovery, gypsum floral pattern Mammoth Cave National Park; National Park Service
View on map 
Cave, before trail construction, New Discovery, 1941 Mammoth Cave National Park; National Park Service
View on map 
Circa 1941
Onyx formation, new entrance to Mammoth Cave Mammoth Cave National Park; National Park Service
View on map 
Circa 1934
Cave, before trail construction, New Discovery, 1942 Mammoth Cave National Park; National Park Service
View on map 
1942-03
WGRC prepares for cave radio broadcast Mammoth Cave National Park; National Park Service
View on map 
1940-08
Cave, New Discovery, gypsum floral pattern Mammoth Cave National Park; National Park Service
View on map 
WGRC radio broadcasts from Echo River Mammoth Cave National Park; National Park Service
View on map 
1940-08
Cave, Crystal Lake boat trip Mammoth Cave National Park; National Park Service
View on map 
1940-06
Close view of helictites, Crystal Cave Mammoth Cave National Park; National Park Service
View on map 
Circa 1930
After cave trail construction, New Discovery, 1942 Mammoth Cave National Park; National Park Service
View on map 
Circa 1941
WGRC radio broadcasts from Echo River Mammoth Cave National Park; National Park Service
View on map 
1940-08
Cave, New Discovery, gypsum floral pattern Mammoth Cave National Park; National Park Service
View on map 
WHAS radio broadcast from onyx chambers Mammoth Cave National Park; National Park Service
View on map 
1939-09
New Discovery, excavation work Mammoth Cave National Park; National Park Service
View on map 
Publicity photo, sleep study, Kleitman and Richardson Mammoth Cave National Park; National Park Service
View on map 
1938-07
Cave, the Elephants Ears, College Heights Avenue Mammoth Cave National Park; National Park Service
View on map 
Circa 1942
Armchair, old entrance Mammoth Cave (reversed) Mammoth Cave National Park; National Park Service
View on map 
Circa 1935
WLW radio interview in the cave Mammoth Cave National Park; National Park Service
View on map 
1940-07
Wildlife, cave crickets on a cave wall Mammoth Cave National Park; National Park Service
View on map 
1939-09
Cave, Kleitman and Richardson experiment, publicity photographs Mammoth Cave National Park; National Park Service
View on map 
1938-07-2
Gypsum flowers in unidentified area of cave Mammoth Cave National Park; National Park Service
View on map 
Circa 1942
Cave, New Discovery, gypsum (Little Paradise) Mammoth Cave National Park; National Park Service
View on map 
1939-09
WGRC radio broadcasts from Echo River Mammoth Cave National Park; National Park Service
View on map 
1940-08
WGRC radio broadcasts from Echo River Mammoth Cave National Park; National Park Service
View on map 
1940-08
Wildlife, cave crickets on a cave wall Mammoth Cave National Park; National Park Service
View on map 
1939-09
Gypsum flowers in unidentified area of cave Mammoth Cave National Park; National Park Service
View on map 
Circa 1942
Cave entrance under ice and snow Mammoth Cave National Park; National Park Service
View on map 
Circa 1935
WGRC radio broadcasts from Echo River Mammoth Cave National Park; National Park Service
View on map 
1940-08
Close view of fungus in Crystal Cave Mammoth Cave National Park; National Park Service
View on map 
Circa 1930
Cover over New Discovery shaft, 1941 Mammoth Cave National Park; National Park Service
View on map 
Circa 1941
Gypsum flowers in unidentified area of cave Mammoth Cave National Park; National Park Service
View on map 
Circa 1942
Cave, New Discovery, gypsum (Little Paradise) Mammoth Cave National Park; National Park Service
View on map 
1939-09
WHAS radio broadcast from onyx chambers Mammoth Cave National Park; National Park Service
View on map 
1939-09
Caves, Echo River boat ride Mammoth Cave National Park; National Park Service
View on map 
Circa 1942
Before cave trail construction, New Discovery, 1941 Mammoth Cave National Park; National Park Service
View on map 
Circa 1941
WHAS radio broadcast from onyx chambers Mammoth Cave National Park; National Park Service
View on map 
1939-09
Cave, flowstone formation in Fossil Avenue, 1942 Mammoth Cave National Park; National Park Service
View on map 
Circa 1941
WGRC prepares for cave radio broadcast Mammoth Cave National Park; National Park Service
View on map 
1940-08
Gypsum flowers in unidentified area of cave Mammoth Cave National Park; National Park Service
View on map 
Circa 1942
Caves, New Discovery, Ostrich Column or Sand Crane Mammoth Cave National Park; National Park Service
View on map 
Gypsum flowers in unidentified area of cave Mammoth Cave National Park; National Park Service
View on map 
Circa 1942
Ladder in cathedral domes entrance Mammoth Cave National Park; National Park Service
View on map 
Circa 1935
Gypsum flowers in unidentified area of cave Mammoth Cave National Park; National Park Service
View on map 
Circa 1942
Gypsum flowers in unidentified area of cave Mammoth Cave National Park; National Park Service
View on map 
Circa 1942
Gypsum flowers in unidentified area of cave Mammoth Cave National Park; National Park Service
View on map 
Circa 1942
Cave, door at exit of new discovery shaft Mammoth Cave National Park; National Park Service
View on map 
Circa 1940
New Discovery, two guides in cave Mammoth Cave National Park; National Park Service
View on map 
Construction of Mammoth Cave Trail
Entrance of moonshine cave
Before trail construction, New Discovery, 1941
Entrance of Proctor Cave
Mammoth Cave, Crystal Lake
Cave, New Discovery, needle gypsum
Column in unidentified area of cave
Cave, trail construction, New Discovery, 1942
The path to Mammoth Cave entrance
Cave, rock with gypsum deposits
Caves, New Discovery, gypsum ribbon
Cave, Mammoth Dome from above, 1941
Before trail construction, New Discovery, 1941
Man in cave examining rock formation
Frozen Niagara section of Mammoth Cave
Before trail construction, New Discovery, 1941
Close, blurry view of cave formations
Entrance of moonshine cave
Cave, Hindu Temple, showing cave formations
Unidentifiable view and location (inside of cave?)
Caves, wooden bridge over Echo River
Frozen Niagara section of Mammoth Cave
Improved cave lighting, Frozen Niagara, 1942
Various angles of Frozen Niagara
Close view of helictites, Crystal Cave
Portrait of couple taken in cave
Water Resources Management Plan
Environmental assessment natural resources management plan; Lehman Caves
Soldiers entering cave at historic entrance, 1941
Trail construction in cave
Frozen Niagara section of Mammoth Cave
Park rangers examining cave opening
Entrance of Proctor Cave
Cave, group descending Historic Entrance stairs
Gateway completed at Proctor Cave
Ruins of Karnak Mammoth Dome, 1937
Cave, before trail construction, New Discovery, 1942
New Discovery, excavation work
Various angles of Frozen Niagara
Cave, before trail construction, New Discovery, 1942
Party in Washington dining room, 1935
Yellowstone photo album 23, page 191
Cave, visitors enter the Historic Entrance, 1946
Cave, before trail construction, New Discovery, 1942
Gypsum deposits, unknown location in cave
Cave, New Discovery, Mound City and terraces
Caves, wooden bridge over Echo River
Gypsum deposits, unknown location in cave
Close view of helictites, Crystal Cave
Chinese Wall section of cave formation
Cave, shaft to New Discovery
WLW radio in the cave
Cave, Drapery Room stairs and trail
Cave, New Discovery, gypsum floral pattern
Cave, before trail construction, New Discovery, 1941
Onyx formation, new entrance to Mammoth Cave
Cave, before trail construction, New Discovery, 1942
WGRC prepares for cave radio broadcast
Cave, New Discovery, gypsum floral pattern
WGRC radio broadcasts from Echo River
Cave, Crystal Lake boat trip
Close view of helictites, Crystal Cave
After cave trail construction, New Discovery, 1942
WGRC radio broadcasts from Echo River
Cave, New Discovery, gypsum floral pattern
WHAS radio broadcast from onyx chambers
New Discovery, excavation work
Publicity photo, sleep study, Kleitman and Richardson
Cave, the Elephants Ears, College Heights Avenue
Armchair, old entrance Mammoth Cave (reversed)
WLW radio interview in the cave
Wildlife, cave crickets on a cave wall
Cave, Kleitman and Richardson experiment, publicity photographs
Gypsum flowers in unidentified area of cave
Cave, New Discovery, gypsum (Little Paradise)
WGRC radio broadcasts from Echo River
WGRC radio broadcasts from Echo River
Wildlife, cave crickets on a cave wall
Gypsum flowers in unidentified area of cave
Cave entrance under ice and snow
WGRC radio broadcasts from Echo River
Close view of fungus in Crystal Cave
Cover over New Discovery shaft, 1941
Gypsum flowers in unidentified area of cave
Cave, New Discovery, gypsum (Little Paradise)
WHAS radio broadcast from onyx chambers
Caves, Echo River boat ride
Before cave trail construction, New Discovery, 1941
WHAS radio broadcast from onyx chambers
Cave, flowstone formation in Fossil Avenue, 1942
WGRC prepares for cave radio broadcast
Gypsum flowers in unidentified area of cave
Caves, New Discovery, Ostrich Column or Sand Crane
Gypsum flowers in unidentified area of cave
Ladder in cathedral domes entrance
Gypsum flowers in unidentified area of cave
Gypsum flowers in unidentified area of cave
Gypsum flowers in unidentified area of cave
Cave, door at exit of new discovery shaft
New Discovery, two guides in cave
Sort (Relevance)
Items per page (100):
Page 2 of at least 8
About 780 Items

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