walls and canals of nandowas part of nan madol. pohnpei, micronesia, oceania.

ancient archaeological archeology architecture basalt canals castle city civilization culture federated fortification gates green heritage historical holiday island landmark madol megalith megaliths micronesia 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 water world