Gulf of Kotor (the biggest gulf of the world)
The Gulf of Kotor in southwestern Montenegro is a winding bay on the Adriatic Sea. The Bay of Kotor (Boka Kotorska; Bocche di Catta...
Son Doong Cave , a cave belongs to the Phong Nha-Ke Bang grotto system in central Quang Binh Province, has been discovered to be the biggest...
