Cross over the Croatia-Bosnia and Herzegovina border and head underground to explore the UNESCO World Heritage–listed Vjetrenica Cave on this day trip from Dubrovnik. With a professional guide, explore the famous cave network of stalactites, stalagmites and subterranean lakes. See ancient cave drawings and learn about the cave’s long history and status as the country’s largest and most important cave. Then, enjoy a tasty lunch (own expense) at a local restaurant before returning to Dubrovnik.