
1) Island of Ishikawa Prefecture 2) Island of the Sea of Japan
Found on
https://www.crosswordclues.com/clue/mitsukejima

According to folklore, the island was given the name `Mitsukejima` by the monk, scholar, and artist, Kūkai, who was the first to discover the island while travelling from Sado Island, Niigata. Mitsukejima is approximately 150 metres long, 50 metres wide, and 30 metres above sea level. It is composed of diatomaceous earth, the raw materials for .....
Found on
http://en.wikipedia.org/wiki/Mitsukejima
No exact match found.