Admiral's Arch, Australia



Cave in California



Han Son Dung, Vietnam



Comb De las Golondrinas, Mexico


 
 Damlataş, Turkey

 
 
Dragon Cave, Greece



Shulgan-Tash, Bashkortostan



Cueva de los Cristales, Mexico



Phraya Nakhon, Thailand


 
 Jeita Grotto, Lebanon 

 
 
Nehru Cave, Spain



The tunnel near Jerusalem



The caves in the mountains of Lebanon



Nia Caves, Malaysia


 
 A large Cave, Borneo

 
 
Cave of Swallows, Mexico



Reed Flute Cave, China



Cave of Fingal, Scotland





 
 
 غار کتله زنجان ، غار ۳۰ میلیون ساله ایرانی