Colorized view inside Great Onyx Cave showing the large white gypsum formation known as the Elephant Ear. Two visitors stand on a wooden walkway amid draperies of flowstone and stalactites.
Linen texture visible; no white border; printed card number 6B-H411 at lower right.
Postmark: none visible. Unused Curteich "C.T. Art-Colortone" linen card, divided back, no message or address written; light soiling and a faint smudge on the back.
Cite this card
Elephant Ear, Great Onyx Cave, Mammoth Cave National Park, Kentucky, postcard, c. 1930. PostalPast Collection. https://postalpast.com/postcard/elephant-ear-great-onyx-cave-mammoth-cave-national-park-kent. Accessed October 5, 2026.