I live so close to these caverns yet I still haven't visited. Definitely adding to my Texas Bucket List! One of the most beautiful cave system in the world, Caverns of Sonora in Texas, USA (by cavernsofsonora).
Sea Cave, Malta Sea caves or the Blue Grotto are located on the island of Filfla in Malta. These caves are popular for their beauty and their location when combined with the sunrise, leads to beautiful shades of blue in the water.
Waitomo Glowworm Cave in New Zealand is famous because It’s filled by worms that glow in the dark, Arachnocampa luminosa. This worm nests in the roof of the cave and hang like stars glowing on the roof of the cave.
Neversink Pit- can't believe I'd never heard of this place until today! "Neversink pit is a limestone sinkhole in North Alabama. It’s one of the most-photographed sinkholes in the world because of its beautiful fern-covered ledges and waterfalls.
Melissani Cave, Kefalonia, Greece n Greek mythology, nymphs (female nature deities) inhabited this breathtaking cave and lured men in with their beauty. Under a high sun, the amazingly blue is illuminated for any lucky swimmers.
Katala Khor Cave, Garmab, Zanjan Province The name, Katale khor, means "mount of Sun". Geological studies in 1984 showed that the cave formation dates back to the Jurassic period. It is believed that the cave joins to Ali Sadr Cave in Hamadan province.