Hang Son Doong , Phong Nha-Kẻ Bàng National Park, Vietnam
Photo: Shutterstock
Batu Caves, Malaysia
Photo: Shutterstock
Cueva de los Cristales (Giant Crystal Cave), Mexico
Photo: Flickr – julie rohloff
Skocjanske jame, Slovenia
Photo: Shutterstock
Majlis al Jinn Cave, Oman
Photo: Shutterstock
Carlsbad Caverns, New Mexico
Photo: Shutterstock
The Blue Grotto, Capri, Italy
Photo: Flickr – Brad Coy
Fingal’s Cave, Scotland
Photo: Flickr – dun_deagh
Caves of Okinawa, Japan
Photo: Shutterstock