Earlier knowledge of the American caves reported in Valvasor's "Die Ehre dess Herzogthums Crain" (1689) - from 1513 - Shaw, Trevor R. (Acta carsologica, 1995)
Keywords: kras (geologija); krasoslovje; kraške jame; List of caves in Slovenia; speleologija; United States of America; Valvasor, Johann Weikhard, 1641-1693; Valvasor, Johann Weikhard: Die Ehre dess Herzogthums Crain; ZDA