Keywords: Postcard of Postojna Cave 1959.jpg Postcard of Postojna Cave 1959 http //www ebay com/itm/Slovenia-caves-interior-railroad-Stalagmites-Stalactites-Postojnska-Jama-/332019937664 author PD-Slovenia 1959 postcards of Slovenia Postcards of the interior of Postojna Cave Images from eBay |