Nan Douwas, the main structure at Nan Modal, an ancient social, political and religious center constructed of basalt logs on the island of Pohnpei in Micronesia. Description from gregvaughn.com. I searched for this on bing.com/images
The Flextracks is a cost-effective, error free alternative to expensive prefabricated curtain tracks. It is constructed out of resin with an embedded steel I beam spine, allowing the track to bend horizontally.