7 Most Amazing Caves

salam.....now i want to share about the 7 most amazing caves of our world which i read in www.oddee.com.the first one is about the Cave of Crystals in Mexico which known as the world's largest known natural crystals.it containing the largest know natural crystals-translucent beams of gypsum as long as 36 feet(11 metres).the cave was 950 feet(290metres) underground.the second amazing cave is Majlis al Jinn Cave in Oman which known as world's second largest cave chamber.the access to this cave is through a hole in the ground with a rope.the inner height is between 120 and 150 metres ans the cave floor 300 by 200 metres which means the Great Pyramid of Giza can be fitted inside this cave.the third is Waitomo Glowworm Cave in New Zealand.inside this cave was the habitat for the glowworm. the roof of the cave was covered with glowworms larva which most people called the heavens at night. the fourth one is Elsviesenwelt Ice Caves (Austria). the largest ice caves known to man. the other three are Cave of the Ghost(Venezuela)(two helicopter can comfortably fly into it), Fantastic Cave Pit(US)(the deepest known cave pit in the continential USA) and Dongzhong Cave(China)(a cave which also a primary school)