A) Krubera Cave B) Mount Elbrus Cave C) Morca Cave D) Veryovkina Cave
A) Russia B) France C) Georgia D) Ukraine
A) 1,980 meters B) 2,050 meters C) 2,300 meters D) 2,212 meters
A) Russia B) Bulgarian Mountains C) Armenia D) Abkhazia, Georgia
A) Sea Cave B) Limestone C) Volcanic D) Ice
A) Son Doong Cave B) Hang En Cave C) Ailao Mountain Cave D) Phong Nha Cave
A) It contains a lake. B) It has many stalactites. C) It has its own ecosystem. D) It is completely dark.
A) Son Doong Cave B) Mammoth Cave C) Luray Caverns D) Waitomo Cave
A) Astronomical data B) Botanical diversity C) Geological history D) Meteorological phenomena |