Cave, New Discovery, walls of Onyx Avenue, man with lantern in picture
Mammoth Cave National Park; National Park Service
New Discovery, gypsum sprouting out of cave floor
Mammoth Cave National Park; National Park Service
Close view of cave formation crystals in cave
Mammoth Cave National Park; National Park Service
Small drapery formation in radio room of cave
Mammoth Cave National Park; National Park Service
Cave, the Elephants Ears, College Heights Avenue
Mammoth Cave National Park; National Park Service
Cave, Evelyn Leedy standing within the Chinese Temple formation
Mammoth Cave National Park; National Park Service
Bottom of Rainbow Domes formation showing completed protection cage surrounding cave area, improved lighting, Frozen Niagara, 1942
Mammoth Cave National Park; National Park Service
Steel supports and chicken wire cage, lighting formations in great onyx colonnade, improved lighting, Frozen Niagara, 1942
Mammoth Cave National Park; National Park Service
Caves, gypsum formation on Morrison Avenue
Mammoth Cave National Park; National Park Service
Caves, onyx chamber (St. Peter's Dome) cave formations
Mammoth Cave National Park; National Park Service
Young women at bridal alter formation in Gothic Avenue area of cave
Mammoth Cave National Park; National Park Service
Cave, helictite formations, Morrison Avenue
Mammoth Cave National Park; National Park Service
Close, blurry view of cave formations
Mammoth Cave National Park; National Park Service
Cave, Drapery Room formations
Mammoth Cave National Park; National Park Service
Frozen Niagara area of cave with cave visitors at top of formation
Mammoth Cave National Park; National Park Service
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