inside nan madol: walls, and moat made of large basalt slabs, overgrown ruins in jungle, pohnpei, carolines, micronesia, oceania.

ancient archaeological archeology architecture basalt castle city civilization culture federated fortification green heritage historical holiday island jungle landmark lonely madol megalith megaliths micronesia moat monument mysterious nan ocean oceania old outdoor pacific palm palms pohnpei prehistoric rock rocks ruin ruined scenery site sky slabs states stone sunny tourism town travel tree unesco vacation walls wood world