Departure from Novi Vinodolski / Crikvenica in the morning hours (approximately 9 h). Driving to Postojna and Postojna cave.  Postojna Cave is included in the largest and most visited cave in the world. In the cave is a constant temperature of 8 degrees Celsius through the year. An interesting detail is, a resident of the cave is a very interesting animal, human fish that lives in total darkness.A tour of the Postojna Cave begins by driving in the tourist train that goes into the cave, and continues on foot in the company of guides. Sightseeing tour takes about 90 minutes, and then the group has free time for lunch and buying souvenirs.Back about 17 h.