KE-11 Echo River, 360 Ft. Underground in the Mammoth Cave of Kentucky 7A. H 3280
Echo River is the largest body of water yet discovered in Mammoth Cave and a boat ride on this river down on the lowest level is an unforgetable experience. Here, 360 ft. under- ground are found several species of eyeless fish. C. T. GENERAL KENTUCKY SCENES GENUINE CURTEICH-CHICAGO"'C.T. ART-COLORTONE''POST CARD (REG. U.S. PAT.OFF.) PLACE ONE CENT STAMP HERE POST CARD
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