Qiandao Lake is a man-made lake located in Chun’an County, China, where archeologists have discovered in 2001 ruins of an underwater city. The city is at a depth of 26-40 meters and was named “Lion City”. There would have been 290,000 people living in this city during more than 1300 years.
…It says entirely too much about my geekery that my very first thought on seeing the third image from the bottom was “Oh look! A dial up device!”
(rolls eyes at self)