Pak Ou is a famous, well-known destination, and while it is not very ‘spectacular
This region, which stretches north from Kandy in central Sri Lanka
Gunung Mulu National Park in Malaysian Borneo is a UNESCO World Heritage site
This historic site, often known as the “big-headed Ghost cave,” is one of Krabi’s most well-known caverns
Phong Nha is one of the most visually magnificent, massive, and buried behind a lovely UNESCO-protected terrain on our list