Caving · Postojna, Inner CarniolaAdventure caving, Postojna Cave systemADVANCEDRisk: MODERATEEUR Guided adventure tour €…Beyond the famous electric-train show cave lies an enormous, still only partially explored karst system — specialist "Adventure Caving" trips leave the tourist route entirely for unlit crawls, climbs and squeezes through untouched passage.View details
Caving · Karst region, southwest SloveniaŠkocjan Caves explorationADVANCEDRisk: MODERATEEUR Speleology tour €60–100A UNESCO World Heritage cave system where an entire river disappears underground into one of the largest known underground canyons on Earth — beyond the show-cave section, guided speleology trips push into wild, unlit passages well past where casual visitors turn back.View details