travertine speleothem (devil's armchair, gothic avenue, mammoth cave, kentucky, usa) 7 color palette

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#221F1A #69574D #4E3D32 #C2A493 #9B7864

related tags: 201E1C 221F1A 473F39 4E3D32 69574D 8D7C72 9B7864 B6A79F C2A493 armchair avenue cave caves devils dripstone flowstone gothic kentucky mammoth national park speleothem travertine 625954