Mikawa Mu Valley

Scavenger hunts, cave exploring and more!

An underground theme park located close to Iwakuni

Mikawa Mu Valley is a local theme park that was made in 1993 after an old mine that closed 3 years before. It is known that the mine opened as a silver mine during the Muromachi Period (1336~1573) ores changed from silver to tin, then to copper. Kuga Mine was producing tungsten before it closed, at one point it was once the biggest producer of tungsten in the country. The theme of this park is the lost continent of Mu, we have to do a scavenger hunt with the clues given on the map. Other than the scavenger hunt, we can also experience placer mining at the pond they have. If you are lucky enough, maybe you can find enough gold to cover your expenses for the day!!

It is a perfect half-day trip if you have kids to entertain. The natural lake and waterfall inside the mine is a must-see too. Due to the long history of the mine, the facility is quite big please pay attention to your kids if they are young so they don’t get lost. Additional events such as Night Valley are also hosted throughout the year check their website for more info.


HOURS:10:00 ~ 17:00 (Closed on Wednesdays)
PRICE:Adult: ¥1800
Child: ¥950
LOCATION:〒740-0505 山口県岩国市美川町根笠1564-1