The first description of the Postojna Cave dates from the 17th century, when Slovenian scholar Janez Vajkard Valvasor wrote about it in his book The Glory of the Duchy of Carniola.
Uraian pertama tentang Gua Postojna berasal dari abad ke - 17, sewaktu pakar asal Slovenia, Janez Vajkard Valvasor, menulis tentangnya dalam buku The Glory of the Duchy of Carniola.