Keywords: Postcard of Postojna Cave 1912.jpg Postcard of Postojna Cave 1912 http //www ebay com/itm/Old-postcard-Slovenia-Slowenien-Postojna-Postuma-/252638972466 author PD-Slovenia 1912 postcards of Slovenia Colored postcards of Slovenia Postcards of the interior of Postojna Cave Images from eBay |