"An ancient 13th century religious complex, called Nan Madol, was built on the Pacific island of Pohnpei, using columnar basalt quarried from various locations on the island. The massive ruins remain to this day."
The city of Nan Madol was built between 200 B.C. – 800 A.D., on a coral reef near Micronesia. It consisted of about 100 artificial islands made from huge basalt blocks and connected with viaducts. From the start, it dazzles us with a mix of the bizarre and grandeur. From the start it seems incongruous; 250 million tons of offshore basalt in the middle of nowhere.
The ancient ruins of Nan Madol on Pohnpei island Micronesia. This site consists of no fewer than 93 man made islands that were the center of a unified, island wide chiefdom called the Saudeleur dynasty. The Saudeleur dynasty had broken down and been replaced by a fragmented chiefdom by the time of European contact...These ruins were under construction as early as 1200 ad although the site has been occupied since at least 1ad.