An auto repair shop called Racing Factory Yamamoto created a small circuit in Miyazaki prefecture. In 1983 it was initially created for carting purposes as Kunitomi Cartland but more recently it also is being used for grip driving and drifting for regular. The course is very compact with a total length measuring around 600 meters.
Unfortunately the circuit is now permanently closed.
The circuit is some 30 minutes by car away from Miyazaki city centre.
A link to the location of the circuit on Google Maps: