The Weather Underground website has posted the first photos. "These are the first-ever images taken of Er Wang Dong, one of the world's most recently discovered natural wonders — 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.

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 12½ acres, or about 12 football fields, fog conceals the roof 820 feet above."

Check out 15 photos of the cave at the link posted above.

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