http://www.weather.com/news/science/environment/china-cave-weather-20131002 These are the first-ever images taken of Er Wang Dong, one of the world's most recently discovered natural wonders â€” a cave so large it has its own weather system.A team of 15 expert cavers and photographers had been exploring caves in the Chongquing province of China, reported the Daily Mail. Play Video Cave So Big, Has Own Weather! Autoplay On Off They found the entrance to the hidden Er Wang Dong cave system and were stunned to see a space so large it contains a cloud. In Cloud Ladder Hall, which measures about 12Â½ acres, or about 12 football fields, fog conceals the roof 820 feet above. "I had never seen anything quite like the inside cloud ladder before," said Manchester photographer and caver Robbie Shone, one of the team members. "Thick cloud and fogs hangs in the upper half of the cave, where it gets trapped and unable to escape through the small passage in the roof."