Oki is the name of Japanese islands,
located on eastern Asian meridian sea
that is sometimes called Japan sea or Eastern Sea.
Its area is designated as Japanese National Park,
at the same time UNESCO Global Geopark,
https://www.env.go.jp/en/nature/nps/park/
http://www.unesco.org/new/en/natural-sciences/environment/earth-sciences/unesco-global-geoparks/
because of its original properties of nature and cultures.
Our company “Oki Geopark Tour Desk” is working for the concept.