Colorized view of the Onyx Columns formation in Great Onyx Cave, showing drapery-like stalactites and flowstone in blue, white, and reddish tones. The cave is within Mammoth Cave National Park.
Linen texture; no white border; printed caption in upper right; light aging.
No postmark; unused card. Divided-back C.T. Art-Colortone (Curt Teich) imprint, linen texture; small brown stain on address side. No handwriting anywhere.
Cite this card
Onyx Columns, Great Onyx Cave, Mammoth Cave, KY, circa 1930, postcard, c. 1930. PostalPast Collection. https://postalpast.com/postcard/onyx-columns-great-onyx-cave-mammoth-cave-ky-circa-1930. Accessed November 2, 2026.
