10 Famous Underground Caves in the World for Adventurous Couples

Mammoth Cave, USA: This cave system is over 400 miles long, making it the longest in the world. Visitors can explore parts of the cave on guided tours.

Waitomo Glowworm Caves, New Zealand: The cave gets its name from the thousands of glowworms that light up the cave walls. Visitors can take boat tours to experience the glowworms up close.

Cenote Ik Kil, Mexico: This underground swimming hole is located in a natural sinkhole and is surrounded by lush vegetation. Visitors can swim in the cool, clear water and admire the beautiful rock formations.

Eisriesenwelt Ice Cave, Austria: This cave is filled with ice formations that create a unique and stunning landscape. Visitors can explore the cave on guided tours.

Son Doong Cave, Vietnam: This cave is one of the largest in the world and is home to its own unique ecosystem. Visitors can take multi-day tours to explore the cave in its entirety.

Reed Flute Cave, China: This cave is known for its colorful rock formations and is lit up with colorful lights. Visitors can take guided tours to explore the cave.

Skocjan Caves, Slovenia: This cave system is home to one of the largest underground canyons in the world. Visitors can explore the caves on guided tours.

Kungur Ice Cave, Russia: This cave is known for its stunning ice formations and unique underground lakes. Visitors can explore the cave on guided tours.

Jeita Grotto, Lebanon: This cave system is home to some of the most beautiful underground lakes in the world. Visitors can take boat tours to explore the caves.

Cango Caves, South Africa: This cave system is known for its stunning limestone formations and is home to some of the oldest cave paintings in the world. Visitors can explore the caves on guided tours.