Mramornica Cave or Marble cave is located near Stanzia Druscovich nearby Brtonigla. It is considered to be one of the largest caves in Istria. Nature lovers will enjoy the refreshing chill of the cave's underground chambers, especially in the hot summer days. It has been known to locals for a long time. The first written document mentioning the Mramornica Cave is contained in a letter by traveler Albert ...